Just spent several days in Kim's place, which served as a great home base for our time in Montreal.
The Skinny: The loft is located in a business/residential district, but it is a quick walk to downtown and Old Montreal. The loft has high ceilings and big windows, which makes it feel bigger/airy. There isn't much lighting once the sun goes down, but that is probably because it relies on natural light to come in via the windows. A very urban feel with well-appointed kitchen for cooking and eating at home. We slept peacefully and quietly, without any excessive noise from the street.
Reliable communication from Kim throughout the process (though, use the Airbnb app, because the phone number isn't in service). Best of all, this place is dog-friendly. My pup really felt comfortable and at home, and the fact that it was pretty quiet kept him from barking and disturbing any neighbors. There is also a nice little park on the Gauchetiere side of the building. Parking is available on the street overnight, but I opted for a garage on Antoine for $25 and no worries.