My husband and I spent a week in Hasan's apartment in the Old Port enjoying JazzFest and Montreal. Literally less than a block from Place Jacques Cartier, but also quiet and comfortable. We loved being able to slip into and out of the summer crowds easily. The apartment was comfortably outfitted, though we didn't really make use of the kitchen beyond cereal and a quick microwave of leftovers. The sleeping area is at the back of the building, plus the walls of old buildings like this are very thick. Slept very well, tho during day needed to close windows and turn fan on to nap. A little white noise goes a long way.
Hasan was incredibly accommodating and hospitable, checking in with us throughout our stay. Wouldn't hesitate to recommend.