This accommodation felt more like a cheap hostel than an airbnb. For $150 per night, I would expect more. The building appears to be an old hostel, so the walls are super thin and you can hear absolutely everything happening beside and above you.
We had a terrible experience with young people partying until 6AM in the room beside us... but we couldn't catch up on sleep in the morning because the people in the room above us were walking around and we could hear anything. We were the only guests in the building who weren't in their early 20s.
I don't recommend this accommodation unless you're in Montreal to party and don't mind lots of noise.