The location of the Benjamins flat was really great for us, 10 minute walk to the Mont Royal Metro, lots of Bixi stations around (our primary mode of transportation) and loads of restaurants and cafes within walking distance.
The flat was comfortable and the air conditioning was appreciated for the 10 days we were in Montreal in late July.
We had no issues with the music and sound from the bar downstairs - like other reviews said, the bedrooms were to the back of the flat and we were able to sleep no problem. No issues with smoke either.
Would recommend this flat for anyone who is active and prefers/are able to walk or bixi bike as primary modes of transportation. Definitely not great for anyone with a car.