The Mansion On The Sea
1400 Duval Street, Key West, FL 33040-3133
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Avg. RM 2,707 /night, 3/18 - 3/19
RM 3,196
per night
RM 2,781
per night
RM 2,365
per night
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Reflects recent average nightly prices reported by our partners, and may not include estimated taxes or fees. Price at checkout may differ.
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About
#11 of 58 hotels in Key West
Location
Rooms
Value
Cleanliness
Service
Sleep Quality
Tripadvisor gives a Travellers’ Choice award to accommodations, attractions and restaurants that consistently earn great reviews from travellers and are ranked within the top 10% of properties on Tripadvisor.
The Mansion on the Sea, formerly known as the Southernmost House, officially changed it's name on July 1, 2023. We are an historic, oceanfront property located at 1400 Duval Street, in Key West, Florida, and remain the Southernmost House in the continental United States. Operating since 2006 as an 18 room guesthouse, we offer 9 rooms in the Main house, 3 bungalows, a cottage and 4 rooms and full size apartment in the Lopez House, directly across the Pocket Park from the Mansion. Preserved to retain our original history, but updated to provide our guests with all the modern conveniences you'd expect to find in the most luxurious hotels available in an island paradise such as Key West, we are The Mansion on the Sea. We are an all-adult guesthouse, and require all hotel guests to be at least 18 years of age. Our front desk is available to take reservations 7 days a week from 8:00 a.m. until 10:00 p.m.
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Property amenities
Paid private parking on-site
Free High Speed Internet (WiFi)
Pool
Free breakfast
Boating
Snorkelling
Taxi service
Adults only
Secured parking
Wifi
Pool / beach towels
Infinity pool
Pool with view
Outdoor pool
Heated pool
Fence around pool
Poolside bar
Breakfast available
Complimentary tea
Outdoor dining area
Canoeing offsite
Patio
24-hour security
Baggage storage
Concierge
Gift shop
Newspaper
Non-smoking hotel
Outdoor furniture
Sun loungers / beach chairs
Sun terrace
Sun umbrellas
Room features
Air conditioning
Housekeeping
Interconnected rooms available
Private balcony
Coffee / tea maker
Refrigerator
Cable / satellite TV
Complimentary toiletries
Safe
Wardrobe / wardrobe
Bottled water
Iron
Private bathrooms
Wake-up service / alarm clock
Flatscreen TV
Hair dryer
Room types
Ocean view
Pool view
Bridal suite
Non-smoking rooms
Suites
Good to know
HOTEL CLASS
Star ratings are intended to indicate the general level of features, amenities, and services to expect. This property is classified according to Giata.
HOTEL STYLE
Classic
Business
Languages Spoken
English, Russian, Spanish, Ukrainian
Location
1400 Duval Street, Key West, FL 33040-3133
Getting there
Great for walkers
Places to stay are graded on a 0-100 scale. The higher the grade, the easier it is for travellers to find restaurants and things to do within walking distance.
Grade: 91 out of 100
91
Key West Intl Airport
3.9 km•
See all flights
Car Hire
28 Restaurants
within 0.5 kilometers
Reviews
4.5
1,419 reviews
Reviews summary
This summary was created by AI, based on recent reviews.
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The Mansion On The Sea garners praise for its comfortable rooms, which offer luxurious touches and stunning ocean views, according to guests. The hotel's atmosphere strikes a unique balance between eclectic liveliness and intimate luxury, making it a hit with many visitors. Exceptional service is frequently highlighted, with staff members providing a welcoming and efficient experience.
While opinions on the hotel's value vary, its prime location near the sea and local attractions, along with its well-maintained cleanliness, are consistently applauded. Amenities, including a quality continental breakfast, contribute to the hotel's appeal, though some reviewers consider the pricing to be on the higher side.
Location
Picturesque
Atmosphere
Eclectic
Rooms
Comfortable
Value
Expensive
Cleanliness
Meticulous
Service
Attentive
Amenities
Top-notch
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Detailed Reviews
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Our stay at The Mansion on the Sea in Key West was simply unforgettable! After a small booking margin through Expedia that initially caused some excitement, General Manager Nina Powers personally took care of finding a fantastic solution. Thanks to a generous upgrade, our holiday was not only saved, but an absolute highlight!
The entire staff was exceptionally warm, professional and always eager to provide us with the best possible stay. The location of the hotel is spectacular – right by the sea, with breathtaking sunsets and a relaxed, luxurious atmosphere. The rooms are stylishly furnished, well maintained and leave nothing to be desired.
We can recommend this hotel without restriction and are already looking forward to our next visit. A big thank you to the whole team for this fantastic stay!
The entire staff was exceptionally warm, professional and always eager to provide us with the best possible stay. The location of the hotel is spectacular – right by the sea, with breathtaking sunsets and a relaxed, luxurious atmosphere. The rooms are stylishly furnished, well maintained and leave nothing to be desired.
We can recommend this hotel without restriction and are already looking forward to our next visit. A big thank you to the whole team for this fantastic stay!
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Date of stay: March 2025Trip type: Travelled as a couple
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews as part of our industry-leading trust & safety standards. Read our transparency report to learn more.
We had an adorable bungalow right by the pool. The main house is gorgeous with so much history to explore in every room. The heated pool was actually warm enough to swim, even with our marginal weather. Unlimited bottled water was easily available. Perfect location with great views and easy walk to all the experiences.
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Date of stay: January 2025Trip type: Travelled with family
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews as part of our industry-leading trust & safety standards. Read our transparency report to learn more.
A lot to digest? Read an AI-generated summary of recent traveller reviews.
We biked the nearly 11 miles around the Key and can't imagine a better place to stay on the entire island. First, the building has historical charm (built in 1897), and the high ceilings and classy furnishings make it quite elegant. Second, the pool is private and immaculate, Anne Marie is a delightful conversationalist in serving the poolside guests, and the waters of the Atlantic abut the property. You cannot beat the view. Third, situated at the end of Duvall Street, it's easy walking distance to lots (including the Southernmost Buoy - go in the morning when there's no line), and an easy jog or bike ride from Mallory Square on the other end (1.2 miles), where folks gather to watch the gorgeous sunset. Bikes are cheap ($15/day) and the grounds have places to lock them up. Synopsis: close to everything, but separate enough to be quiet and private. Like everyone's said, the breakfast provided is quite nice (esp when enjoyed outside on the patio tables), and the next door Seaside Cafe (same ownership) has quick and tasty eats (the lobster pizza was fantastic). We were in room 202 and had access to 2 common balconies, which was also great (201 has its own). Bottom line: you will have a great stay here, as it was probably the best part of our wonderful 3 days on the Key.
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Date of stay: February 2022
Value
Service
Sleep Quality
Room Tip: 201 has its own balcony, but all 2nd floor rooms share access to 2 others.
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews as part of our industry-leading trust & safety standards. Read our transparency report to learn more.
Response from Julia Stephenson, Marketing at The Mansion On The Sea
Responded 1 Mar 2022
Thank you for your review, especially for the included shout out to Annmarie and the Seaside Cafe! We hope to host you again soon.
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This response is the subjective opinion of the management representative and not of Tripadvisor LLC.
Our stay was fabulous! Room 107, bottom floor overlooks the pool and the ocean plus has a reserved table in front of the rooms massive window for 107♥️. A huge shout out to the kindest staff and owner!
Nina, Dean and Beth are top notch!!!
The owner seen my husband and I trying to get a selffy and ask if he could take out pictures. The pictures were great! He knew which angle to get the steps and mansion in😘. When my husband ask about the bullet hole in the window, he brought us in and showed him the window.
These folks are some of the kindest and nicest I’ve seen in Key West!
Our anniversary week was absolutely lovely due to this folks.
We enjoyed having their famous Cuban coffee on the reserved seating for only room 107 each morning while looking at the ocean and pool. We will be back for sure!!!!
Side note: the southern most point picture opt is like less than a block away. If you’re there at about 7ish, no wait time!
Nina, Dean and Beth are top notch!!!
The owner seen my husband and I trying to get a selffy and ask if he could take out pictures. The pictures were great! He knew which angle to get the steps and mansion in😘. When my husband ask about the bullet hole in the window, he brought us in and showed him the window.
These folks are some of the kindest and nicest I’ve seen in Key West!
Our anniversary week was absolutely lovely due to this folks.
We enjoyed having their famous Cuban coffee on the reserved seating for only room 107 each morning while looking at the ocean and pool. We will be back for sure!!!!
Side note: the southern most point picture opt is like less than a block away. If you’re there at about 7ish, no wait time!
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Date of stay: May 2024Trip type: Travelled as a couple
Room Tip: Use an Uber, when staying at the mansion walk down to the southern most point for pictures early!...
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews as part of our industry-leading trust & safety standards. Read our transparency report to learn more.
Response from NIna P, General Manager at The Mansion On The Sea
Responded 9 Jun 2024
Dear Tammyfrom KY, Thank you for your review of The Mansion on the Sea. We're glad to know that you had a "fabulous stay", and we hope you will return soon. Thanks for your gracious comments about our staff. We enjoyed having you as our guests.
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This response is the subjective opinion of the management representative and not of Tripadvisor LLC.
I can't give this place enough stars, it's just an amazing place with incredible people running it. Nina, the manager, found out that this was our engagement trip and she made sure to give us an amazing experience. We got to experience two different room types and she had the staff setup a bottle of complimentary champagne in our room for the celebration. She even hand wrote us a congratulations card !
The last morning we were running a bit slow from a night of celebrating haha. Nina understood and gave us an extra hour or so to get up and moving and get checked out.
100% this is our new go-to hotel in Key West.
From Kelty and Honeybaby, Thank You!
The last morning we were running a bit slow from a night of celebrating haha. Nina understood and gave us an extra hour or so to get up and moving and get checked out.
100% this is our new go-to hotel in Key West.
From Kelty and Honeybaby, Thank You!
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Date of stay: February 2025Trip type: Travelled with family
Value
Rooms
Location
Cleanliness
Service
Sleep Quality
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews as part of our industry-leading trust & safety standards. Read our transparency report to learn more.
We were at another location in Key West prior to moving here for Christmas Eve and Day. We booked this, paying over $1500 for 2 nights, to spoil ourselves for the holidays. We did so specifically for the 24 hour heated pool (which we discovered wasn't working by stepping in) and the on-site restaurant (which we called and were assured it would be open on Christmas which it wasn't). We own rental cabins and are up front with guests if something has broken and won't be available during their stay. If it's important to them, we find a way to make it right. We don't sweep it under the rug hoping the guest won't notice. The female who checked us in gave us a brief tour of the property with no mention of the pool heater not working. She also told us housekeeping basket would be left outside our room the next day rather than our room being cleaned. We ended up having to go down and ask for one. When I asked the younger male working the desk about the pool heater he told me "it's ok though because the manufacturer is sending us a new one". I
wondered how that was going to help us during our stay to which he again told me the same thing. Very disappointing stay not making for the holiday memories we hoped to have. Will not stay here again.
wondered how that was going to help us during our stay to which he again told me the same thing. Very disappointing stay not making for the holiday memories we hoped to have. Will not stay here again.
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Date of stay: December 2021
Location
Service
Sleep Quality
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews as part of our industry-leading trust & safety standards. Read our transparency report to learn more.
I spent a week at the Mansion on the Sea and it was perfection. The house is absolutely gorgeous, and the experience was enhanced by the efficient, helpful and friendly staff. From the moment I checked in, I felt pampered. The front desk representatives went out of their way to make sure that I had everything I needed; the housekeeping staff kept my room spotless, and the pool and grounds were beautifully maintained.
The Mansion itself is stunning. The house is gorgeous, and it was fun to learn about the history of the property from the front desk staff. You almost feel like you are stepping back in history to a different time.
The pool area is spectacular on its own. There is a great deck right on the ocean where you can enjoy a beautiful view of the water, and the pool is heaven. The temperature was perfect, and I spent 3 out of my 7 days there swimming and relaxing by the pool. They have a fantastic bar right there, and the bartenders were fun to talk with (I highly recommend the Key Lime Pie Daiquiri!)
The location really couldn't be any better. Being on the quiet end of Duval Street is perfect; you can walk to most anywhere you want to go, but you are out of the loud, busy area. There are fantastic restaurants and bars within easy walking distance and the food was great; for the best Cuban Sandwich on the island, be sure to check out Sandy's Food Truck that is parked right across the street from the Mansion. The Mansion also has it's own waterfront restaurant that served excellent food; it was so good that I'm going to write a separate review for that!
My stay at the Mansion on the Sea was a wonderful experience, and I'll definitely be back!
The Mansion itself is stunning. The house is gorgeous, and it was fun to learn about the history of the property from the front desk staff. You almost feel like you are stepping back in history to a different time.
The pool area is spectacular on its own. There is a great deck right on the ocean where you can enjoy a beautiful view of the water, and the pool is heaven. The temperature was perfect, and I spent 3 out of my 7 days there swimming and relaxing by the pool. They have a fantastic bar right there, and the bartenders were fun to talk with (I highly recommend the Key Lime Pie Daiquiri!)
The location really couldn't be any better. Being on the quiet end of Duval Street is perfect; you can walk to most anywhere you want to go, but you are out of the loud, busy area. There are fantastic restaurants and bars within easy walking distance and the food was great; for the best Cuban Sandwich on the island, be sure to check out Sandy's Food Truck that is parked right across the street from the Mansion. The Mansion also has it's own waterfront restaurant that served excellent food; it was so good that I'm going to write a separate review for that!
My stay at the Mansion on the Sea was a wonderful experience, and I'll definitely be back!
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Date of stay: December 2023Trip type: Travelled solo
Value
Location
Service
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews as part of our industry-leading trust & safety standards. Read our transparency report to learn more.
Response from Nina Powers, General Manager at The Mansion On The Sea
Responded 19 Mar 2024
Dear C5652DBchristiner, Thank you for sharing your experience while a guest at The Mansion on the Sea. We appreciate your detailed review and the various comments about the property, our staff, the pool, our extensive history, and our on-site Seaside Cafe. We appreciate that you took the time to give us a detailed review of your week-long stay. We enjoyed having you as our guest and look forward to seeing you in the future. We are so glad that you had a "wonderful experience"!
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This response is the subjective opinion of the management representative and not of Tripadvisor LLC.
Absolutely stunning experience! The location by the sea is breathtaking, offering picturesque views from every angle. The staff is incredibly attentive, making you feel right at home. The rooms are luxurious and well-appointed, with comfy beds and all the amenities you could need. Dining here is a delight, with a menu that is both diverse and delicious! Can't recommend this place enough for a perfect getaway. Will definitely be back!
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Date of stay: October 2024Trip type: Travelled as a couple
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews as part of our industry-leading trust & safety standards. Read our transparency report to learn more.
We were hoping for a wonderful relaxing stay. Unfortunately we were a bit disappointed. The pool was not heated, the shower didn't get hot, the wifi didn't work, the breakfast was okay.. some of the pastries had bugs flying around them, bad coffee and the orange juice was expired.
I will say they were very accommodating with letting us get into the room early and letting us leave our luggage. They said they would refund my resort fee (haven't received yet) for the pool, etc. Which is very nice of them.
Overall it was extremely overpriced for what you get. I know it's key west l, and I know it's going to be pricey...but we expected nicer. Might be a drop in a bucket for some, but spending 1200 for 2 nights is a lot for me.
I will say they were very accommodating with letting us get into the room early and letting us leave our luggage. They said they would refund my resort fee (haven't received yet) for the pool, etc. Which is very nice of them.
Overall it was extremely overpriced for what you get. I know it's key west l, and I know it's going to be pricey...but we expected nicer. Might be a drop in a bucket for some, but spending 1200 for 2 nights is a lot for me.
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Date of stay: November 2022Trip type: Travelled as a couple
Value
Location
Service
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews as part of our industry-leading trust & safety standards. Read our transparency report to learn more.
Response from Nina Powers, General Manager at The Mansion On The Sea
Responded 8 Dec 2022
Dear Caitvogtman, Thank you for sharing your experience while a guest at the Southernmost House. It goes without saying that we are extremely disappointed when we learn any guest is even slightly disappointed with their stay. The items you mentioned are all being addressed. I wish that they had been addressed prior to your departure. Any time a guest has an issue, we want to know about it, so that we may fix it immediately! Since Hurricane Ian paid us an unexpected visit, especially at our ocean front location, we have been rebuilding our pool equipment, which has effected the proper functioning of the pool heater almost daily. As of yesterday, we have our pool heater fully functioning, as well as the lights and all other elements that make the zero entry infinity pool so spectacular. Not having hot water or wi-fi is unacceptable, but the issues you mentioned with breakfast, even more so. Please accept my sincere apologies, and know that each and every item mentioned has now been addressed. We hope you will give us another opportunity to serve you in the future.
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This response is the subjective opinion of the management representative and not of Tripadvisor LLC.
It’s all about location and you can’t beat it when it comes to Mansion on the Sea. The location is perfect! Located on the other side of the island away from the cruise ships. Much better quieter end of Duval Street. Plus it sits on the ocean and you have beautiful views. Priced reasonable. The swimming pool is perfect. Only recommendation is provide real coffee cups in the room versus paper per the other couple we were staying with.
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Date of stay: January 2025Trip type: Travelled as a couple
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews as part of our industry-leading trust & safety standards. Read our transparency report to learn more.
No. Not at all.
No. That’s extra.
There’s a lot of buildings. Not sure which one is the main. They are all very nice.
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"Ask about their bicycles! Everything in Key West is a bike ride away. You can’t expect to drive a car to breakfast and find parking."Read full review
"This is a historical site dating back to the 1800's; just know there are no elevators. But if you need help with luggage just ask!"Read full review
"Use the pedi-cabs to get you down Duval street. Next visit we may try bike or scooter or cart rental. Saw lots of those down Duval street."Read full review
…
PRICE RANGE
RM 2,534 - RM 3,232 (Based on Average Rates for a Standard Room)
ALSO KNOWN AS
southernmost house hotel key west
FORMERLY KNOWN AS
The Southernmost House
LOCATION
United StatesFloridaFlorida KeysKey West
NUMBER OF ROOMS
18
Prices are the average nightly price provided by our partners and may not include all taxes and fees. Taxes and fees that are shown are estimates only. Please see our partners for more details.
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Claim Your ListingTHE MANSION ON THE SEA: UPDATED 2025 Hotel Reviews, Price Comparison and 1,771 Photos (Key West, FL) - Tripadvisor
Frequently Asked Questions about The Mansion On The Sea
Which popular attractions are close to The Mansion On The Sea?
Nearby attractions include Key West Butterfly and Nature Conservatory (0.09 km), Alan S. Maltz Gallery (0.3 km), and Tipsy Rooster Liquor Store & Bar (0.2 km).
What are some of the property amenities at The Mansion On The Sea?
Some of the more popular amenities offered include free wifi, free breakfast, and a pool.
Which room amenities are available at The Mansion On The Sea?
Top room amenities include air conditioning, a flat screen TV, and a refrigerator.
What food & drink options are available at The Mansion On The Sea?
Guests can enjoy free breakfast, a poolside bar, and complimentary tea during their stay.
Is parking available at The Mansion On The Sea?
Yes, paid private parking on-site, secured parking, and street parking are available to guests.
What are some restaurants close to The Mansion On The Sea?
Conveniently located restaurants include Seaside Cafe at the Mansion, The Lobster Shack Key West, and La Grignote.
Are there opportunities to exercise at The Mansion On The Sea?
Yes, guests have access to a pool during their stay.
Which languages are spoken by the staff at The Mansion On The Sea?
The staff speaks multiple languages, including English, Spanish, Russian, and Ukrainian.
Are there any historical sites close to The Mansion On The Sea?
Many travellers enjoy visiting Key West Garden Club (1.1 km), Truman Little White House (1.5 km), and West Martello Tower (0.9 km).
Does The Mansion On The Sea have any great views?
Yes, guests often enjoy the harbour view available here.
Is The Mansion On The Sea accessible?
Yes, it offers reduced mobility rooms. For specific enquiries, we recommend calling ahead to confirm.