What a great find!!!!
Charles was a great host, because he communicated very well before and during my trip. Although I did not see much of him, he provided foolproof directions to his place from the airport as well as instructions on how to get inside of his house. This is a three bedroom residence, so you may be there with other folks but it was not a problem for me (ie there was not a massive wait for the restroom). The house is very spacious with a kitchen/dining area, a living room, and bathroom (with a separate shower and bathtub) for common spaces. Plus, these common spaces were cleaned on a daily basis.
My room was a decent size for one person. It had a TV (with mostly french channels), a desk, ample closet space, and a very comfortable full-sized bed.
This house itself is in a quiet part of the city, but you can walk to the Village and other fast-paced areas within 20-30 minutes. The house is very close to Rue Ontario (a 5-10 minute walk), which has quite a few eateries, including Poutineville. For example, I bought a three day metro pass and used it only three times during my stay. So, the city is very "walkable" ... At least during late September.
Also, this place is perfect if you plan to run Montreal's full or half-marathons, because it is very close to the races' finish line in Parc Lafountaine.
I highly recommend this place for a Montreal adventure.