I have to say I was skeptical about using a site like this to book something that wasn't a hotel or anything but I was PLEASANTLY surprised! We showed up a little earlier than check in but were greeted by the owner and her husband who made us feel more than welcome with stories and jokes to break the ice. The owner made sure to show us all the features, brought us clean towels and linens for the bed and extras in case we needed them. The room came stocked with a full kitchen which easily cut down on our overall costs for our 4 day trip!
The owners stayed to chat and make sure we felt comfortable - adding little tips for getting around and where to buy the best groceries and produce. They also pointed us to a couple websites for things going on in the city and have us contact numbers if anything went wrong.
Parking was 10 a day which was more than a fair price. You could easily park it and leave it using the subway for 18 (which got you a 3 day unlimited pass) - side note the subway line was only 2 blocks away and went anywhere you could have possibly wanted.
If we were to visit Montreal again I would definitely contact the owners. We couldn't have asked for a better surprise! The only thing Not included with our stay was wifi - but there's a Starbucks a block away if that's really something required. All in all we had an amazing time and we'll definitely be back!