The apartment is spacious and clean, and John was very timely with his responses (and so pleasant). He did provide a warning about the apartment being in a noisy area -- full disclosure, when I heard that it would be noisy because the apartment is in a busy area, I expected ambient street noise, etc. (the apartment is located on a very busy street in downtown Montreal), but I did not expect that the apartment was directly attached to a nightclub that plays a booming set until 3 a.m. I think this would be an amazing place to stay if you are planning on hitting the town and need a place to crash; the location is really great. I think it would also be great if you were staying on a night that the nightclub doesn't have a show. The beds are directly up against the wall closest to the club, so earplugs are not going to help you here (also, the room was shaking!). BUT -- John did warn ahead of time about noise; I had just assumed a different level/kind of noise (and now see that there are more recent reviews that would have clarified!).
In summary -- amazing place to stay if you're planning to be out for most of the night; I'd highly recommend for the space, the location, and the friendly and communicative host. If you're hoping for a good night's sleep, I'd recommend checking to see what's going on with the club next door.