I stayed here with my girlfriend for two nights. The studio is really cozy and spacious and we loved all the wood panelling and exposed brick - it did not feel like a basement at all. Alex was there to greet us and was really kind and thoughtful, offering lots of suggestions whenever we bumped into him but otherwise he was respectful and gave us our space. The space was clean with fresh towels & sheets and lots of other nice little touches that made the place feel like home :)
If you want to spend time in the city core I'd recommend coming with a car (parking is free but can be a little hard to find a close spot however the farthest we found was only a 5min walk away) otherwise be prepared to spend approx $20 on an Uber downtown.
Overall we really enjoyed our stay here and would recommend it to anyone visiting Montreal and looking for a quiet neighbourhood.