I lived in N.D.G. while going to school back in the late eighty's and staying at the Ghost Sign Suite was like a trip down memory lane, only with less squalor. Lance's apartment is a great place to stay while in Montreal. It's clean, quiet, and very comfortable. The place is spacious and there's lots of room for hanging out both inside and on the roof-top deck. A word of caution: The stairs are quite steep so if any member of your party is infirm, it might be an issue.
There are plenty of amenities nearby and it's right on a bus line with a short ride to the Metro. Parking isn't too hard to find on the side streets, either.
Lance was very good about communicating and making sure everything was right. We happened to run into him and got the whole story of the renovations, ghost signs, and amazing murals painted by renowned artists.
I heartily recommend staying here!