This is a great place and has everything you need for a comfortable stay. We stayed for 6 nights while going skiing to different resorts around Montreal. Parking is not easy but you should expect that coming to this location (its free over night). That being said we still managed to park for free the whole time and avoid parking tickets. Our unit was small but it felt nice and cozy with big windows letting in natural light. You get a dishwasher and laundry/dryer units which is absolutely insane. Overall I would recommend this place and would come again.
Some tips before coming is be aware of Montreal parking signs, bring ear plugs (if you are a light sleeper), just message Sonder directly if you are having issues with the app (they have great and quick customer service)