My partner and I had a great stay at Sonder. First, the location is amazing. There’s plenty to do nearby, and it’s close to the subway and bus lines so an easy time getting all over Montreal. There’s plenty of great bakeries and restaurants nearby, plus cool stores to poke around in. We didn’t utilize it, but our unit also had a full kitchen and washer/dryer, which could be useful.
The Sonder staff was extremely responsive to a minor issue I had with the climate control system, and helped resolve the issue almost immediately. Baggage hold wasn’t as secure as I had hoped (a locked door that everyone in the building can open), but still was useful when we wanted to leave our bags on our last day before leaving the city.
Overall I would recommend Sonder Le Guerin if you are visiting Montreal. Clean, lots to do in the area, close to transit, and a responsive staff.