Pretty huge convention center. Nice located in the downtown core of Montreal. Exterior is pretty and the interior is pretty huge with lots of room to walk. It's grand and well maintained.
Been here for a few training meetings as well as activities like comic con. It's well run. Comic cons are awesome.
My only issue with the place is that the amount of interesting places to eat inside leaves to be desire, so you have to go out to eat decently. Not an issue in Summer since China town is up the street but during the winter at -30 Celsius.... yeah. It's connected to the underground city but good luck finding those unless you're a regular, which leads to my 2nd point.
They also need to upgrade/improve the signs, it's hard to get around.