This spot was just perfect for our group of 5. We rented both floors and it was far more than enough room, but worked out with our mix of singles/couples and also because a few of us had to work during the daytime. There are many amenities around the apartment making it so you can easily cook, hang out etc. and feel like you're at home. The place was very clean and hardwood floors throughout. The street noise can be quite loud at times and the sun comes in pretty strongly in the morning, so if you're a light sleeper plan accordingly (ear plugs, mask etc.) and you'll be just fine. There was room for off street parking for both of our 4-door cars, and it was great to park and forget it for the weekend with no additional charge or worries.
It is definitely a bit of a hike on foot to Old Town (20min walk and very much up hill- completely feasible for our group of 30-somethings, but just something to be aware of depending on your abilities). That said, it was a super quick (~6-8min) Uber/Taxi ride to get into the "main" part of the city and the area itself surrounding the air bnb is quite lovely with a supermarket, cute little shops, cafes and some restaurants within a few minutes walk (highly recommend checking out the supermarket for great to-go sandwiches/meals and local wine/beer selection!).
Overall, we'd highly recommend this place to anyone traveling in a large group and who doesn't mind not being in the heart of old town. It was only our second time in QC and it was quite nice to start exploring more areas outside of old town and the space and amenities of this air bnb were the perfect way to do it.