Pros:
This apartment and Arnaud was amazing, and mostly full of pros. He was very helpful. Right before we arrived, he gave me, and my group of 5 more, the longest and most thought-out list of places to eat for every type of meal and cuisine imaginable. He told us about some local spas and some local bars. It was amazing and incredibly helpful. The apartment is a very short walk to the train station, meaning we could be all over Montreal in minutes. The places was incredibly clean, very pretty and super spacious. We had 6 people and no one was bumping into one another.
Cons:
Because of his job, Arnaud himself could not answer all of our questions right away, so for the little things we didn't have answers until it was too late. However, he gave us the contact information of someone else who lived in the building, so in an emergency, we had someone to contact! The place is not central air-conditioned, but thats the typical style in Canada, or so I'm told, so I brought fans and one of the bed rooms had a window unit. But be prepared! There is only one bathroom, but the toilet is separate, which made life a lot easier. Keep that in mind if you have a big group who might want to shower at the same time!
All in all, I give this place 5 stars. It was a lovely home and Arnaud was a lovely host. I will definitely return here for my next trip to Montreal.