3 big +++ : Location, quietness and communication. Location is just fantastic : I've lived 16 years in Montreal and couldn't think of a better place where to stay. You can basically walk everywhere. Also, incredibly quiet : no neighbours, windows are facing back alley : absolute silence. Karyma was available all the time for questions, she very nicely brought some croissants from the local (amazing) bakery next door and accommodated me very easily for changing time / date of arrival (my flight was 24h delayed...).
To improve : cleanliness. The apartment was not dirty, but wasn't really clean neither : the floors were dirty, the counters still had dust and smth had been forgotten in the washing machine. Also, one of the knife had been used to open a coffee bag and had been just put back in the drawer, covered with coffee and plastic.
Also they had construction on the roof for a few days which was quite noisy. They very nicely offered me to use another apartment the first day to avoid the mess, but... the following day they needed the apartment and the offer just dropped. Was disappointing. Hopefully that is a one time thing :-)
All in all, will come back ; I'm sure they can learn and improve on cleaning :-)