I highly recommend staying at Mark's place! He was extremely communicative and supportive during the entire process. He responded to our questions right away and made sure to meet us when we arrived to give us a short orientation of the space and the neighborhood.
The space itself is gorgeous -- we spent mornings and nights on the balcony. It is very green and quiet -- a perfect place for quiet thinking and good conversation.
The location is amazing, very close to St.Laurent, many shops and restaurants. Very accessible by bike, train, bus and car. Mark offered us his parking spot, as well.
Overall, incredible stay in Montreal with Mark.