This place is awesome! It's huge and sunny just as described. We woke up to beautiful sunlight from those east/south facing windows, and at night we had a lovely night view of the city. Those wheel chairs are fun and the hammock is the best place to take a sun bath in the morning. Overall the apartment is super cozy and quite enjoyable during daytime and night time. It's also close to a few places we wanted to visit, like Schwartz's for smoked meat sandwiches, Old Europe market for stroop wafels, Mont Royal, etc. It's a bit of walk (20~30 minutes) to major tourist attractions like the Old Montreal or museums, but we liked walking around so that's not a big problem. We didn't use the public transportation during our stay, but we noticed the apartment is pretty close to bus stops and train stations (within 5 minutes of walk).
Ariane prepared the place with clean towels, clean sheets, and was very easy on the check in/check out time (which helped a lot with our trains schedules).
The building itself is a mix of residential and business, so the hallways could be loud. But the apartment itself is sitting at a corner of the building so we hear less noise after we closed the door. It's not the most well maintained building, but the apartment itself is very nice and the neighborhood seems very safe.
Would definitely recommend this place to other travelers!