The good:
The second floor location (with no upstairs or downstairs neighbors) meant we didn't have to worry about accidentally bothering others. The neighborhood was quiet and walkable, though metro/short drive required to Old Montreal. Free parking directly outside the house.
The bad:
The host did not clean the apartment after the last guest's stay. The sheets were clearly used, a sock was left over in the bed from the previous guest, trash was full of liquor and leftovers, and there were random spots/dirt on the walls and ceiling. We did the laundry ourselves, though the dryer was broken, so we could not get all of the comforters to fully dry.
Also, some of the infrastructure (kitchen table in particular) is old and on the verge of falling apart.
Upon contacting him, Mike did generously and quickly compensate us for our inconvenience, which was greatly appreciated. So if you want a budget motel-like stay, go for it, but if you expect beauty, decor, or cleanliness, go elsewhere.