I really enjoyed my stay at M Montreal. They were super flexible with my check in, service was amazing and the amenities were better than I expected. I did find the bathroom and shower to not be super clean, but minor stuff. Maybe that's normal with more than one person using the bathroom. However, I got a towel that was a bit dirty on my last day. I was also surprised to see that even though the place has many amazing activities going on and theme nights, engagement was very low. I went to the bar twice and it was empty. The service was great and people were super friendly and resourceful. I'll definitely be back next time I'm in Montreal.