We spent 3 nights here and it is lovely, just off the route to the Monteverde Forest Reserve (but very quiet). The hosts were very helpful - there was a problem with the hot water when we arrived and they sent someone to fix it within an hour whilst we were out at dinner). It's downhill from the road, but well signposted, so we found it with no problems.
My husband and I absolutely loved our stay at Suite Tacari at Casa Valentina. The room is located in a beautiful house, and is just as luxurious and scenic as suggested in the pictures. We had high expectations, and are pleased to say that the room exceeded them. The bedroom and living area of the room are comfortable, and the bathroom is indulgent, with both a shower and an immense jacuzzi. The host was extremely responsive to our notes and was very organized about everything. The neighbor was also incredibly friendly, helping guide us into the house at night. Moreover, the house is located just outside Monteverde Reserve itself, making the location perfect for any trip to the area. There are also good restaurants and places to visit nearby. We recommend this place highly!