I stayed at le Cartier for 5 nights and had a great stay.
I choose the ensuite studio room, which was spacious and comfy. It was lovely decor with large bed, open plan sitting room area and a little breakfast area.
Shower was hot and powerful, Internet free and reliable. Lovely attention to details from the decor, the soft towels, the little bowl of chocolates in the hallway..
Check in was easy and the owner welcoming and friendly with a wealth of knowledge on Montreal.
The room backed onto a little kitchen area with self service breakfast, croissant, fruit, cereal.
After this was another strip room backing onto the court yard patio, meaning you could rent both rooms for 2 couples or a family, and it is like renting a private apartment rather than a b&b.
Experience was very quiet and private, if you like your b&b to be lots of friendly travelers swapping stories over a home cooked brekkie then this is not for you, this place is like having your own flat.
Location was great. It was very close to all the cafes and restaurants and great atmosphere of the (gay) village, so close to Latin quarter, very close to tube stop. 20 min walk to old town.
Le Cartier was just off a quiet side street so no noise issues, though as a single women traveller I did find walking down this street alone at night a bit uncomfortable, as there were very few people , if any, around and it's not well lit.
Would def stay here again should I return, it was at least half the price of a standard hotel ( see my Westin grand Vancouver review) and in my opinion much better than a hotel.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC