I will repeat what others have said that the apartment is much nicer than you see in the pictures. The place is very modern and finished with high quality materials. The kitchen has granite counter tops and fairly new high-end appliances. The shower on the main floor is particularly nice. The bed was extremely comfortable. You would pay a lot for accommodations like these in a hotel. Yohan was very unobtrusive but willing to help. I would definitely stay here again.
The metro station is two blocks away. There is a Bixie bike station there as well, although I didn't use it because it was mostly rainy during my stay. There is a grocery store and fast food places a few blocks away. I was attending a conference at the convention center downtown and it was very easy to get there quickly.
The apartment is the ground floor and basement of a row house. This seems to be the typical housing in Montreal -- many AirBnB listings are row houses of this vintage. Being fairly old, these structures are somewhat creaky and I did worry sometimes that I was disturbing people in the unit above when I walked around late at night. The units have separate entrances from an outside stairway so there are no privacy issues.
I didn't use the pool as it was too early in the year.