Great location for accessing downtown Montreal, the metro, 747 bus to/from airport, and the "old town/port" area. Easy walking distance for all these things.
The host is easy to deal with, set up check in easily AND if you need it you can store your suitcase for the day when you're checking out in the downstairs office before your flight/train. Very nice option that saved us trying to suitcase around town all day.
We stayed for 3 nights in July 2022. 5 Adult men, most over 6 feet. The apartment itself is very clean, also very 'spartan'. It has what you need and that's it. We didn't fit in one of the beds so keep that in mind if you're tall. Up stairs bed was super comfy I am still wishing I was in it.
We are the kind of travelers that are gone all day and just crash for the night, shower and go out for a full day again. If you are the kind that likes to hang out in your apartment, know that this place is not setup quite for that. It's mostly concrete floors and walls, with a few chairs for the table. Lounging and watching TV for hours isn't what comes to mind here. Not an issue unless that's your goal.
Bathrooms have no shower caddy. They need one.
Would stay again if in the area as it was close to pretty much everything you need to get out to in Montreal.
They also have a roasting pan if you want to cook a roast. That came up every day in conversation :)