This is our sixth time taveling to Montreal for Jazz Fest and this is one of the best places that we stayed. The space was well laid out with great design. The bedrooms were easy to stay in and well set up. We had a small issue with the mattress on the first floor bedroom having a dip in it that caused some sleeping issues but it might have been the bed frame and I informed the owner so that might be addressed quickly.
The bathroom is nice and spacious. It is a little distance from the second floor bedroom at night but it is great.
One note is that there are steps to get even to the first floor bedroom and a step up into the shower, so the space is not wheelchair accessible.
The location is one of the best that we have stayed in. You can easily walk to the Place des Arts to watch the festival but you are also close to public transit to get anywhere in the city. While it is centrally located, the actual street is pretty quiet so you will not here the sound of night clubs or other attractions that are more of an issue a couple of streets away.
The roof deck is really nice. It could use more seating, but it is definitely a great place to have your coffee in the morning, sit out to read a book or share a glass of wine with friends. I would definitely stay at this location again.