We had a wonderful vacation here. The apartment is charming, comfortable, and very well equipped for a family. It's in a great location, with the market, restaurants, shopping, and Metro in easy walking distance. Christian and Judith are very friendly hosts. They communicate well by email and they have arranged local support for any issues that might arise with the apartment (we were greeted by the caretaker on the first night, and didn't see her again because we had no problems). They even left us bicycles to use.
We would love to stay here again the next time we visit Montreal.