We loved staying at Emine's home for our stay in Montreal! We were two couples and there was more than enough room for us. The two bedrooms did get a bit warm with the hot weather (82 degrees F one day), but there were tower fans provided in each room that provided enough airflow that we could sleep comfortably.
The roofdeck was so lovely - we enjoyed a few morning coffees and dinners up there because it was such a perfect spot.
Location was fabulous - we found it very walkable to everything we could want to see in town, but we're also big walkers. For reference, we explored Duluth Street, Mile End, St Laurent, the Old Port, and more all by foot. If you're not huge on walks or the weather's not right for it on your trip, most of the areas we went to were within 2 miles, so I can't imagine an uber would be too expensive.
Checkout was also great - no long laundry list of to-dos (like many airbnbs I've been to in recent years); just leave the used towels in one spot, make sure the keys are accounted for, and lock up.