Thanks for the feedback Jack. I am still very new to Airbnb and renting out your flat can be a very difficult organization especially when you have to leave before your visitors arrive. These comments will help me improve the level of comfort for the next visitors. I found them complete, honest and very constructive.
Sorry for the poor communication. My friend was there to help out and she did her best with all the english she knew. Also as you should know Montreal is French speaken town, so there is really nothing wrong if you don't speak english.
For the departure, that was all my falte. I was supposed to call her to informe her that you are leaving earlier and leaving the keys in the appartment, then i couldn't have phone connection where i was (small village south of France). I appologized to her and now i am appologizing to you a well.
I am glad you managed to have a good time in Montreal and thanks again for leaving the flat clean.