This place is free for Montrealers, you can rent a movie, a music CD or a book all for free and the selection is quite impressive. There are lots of places to sit and browse the bookstore or prepare exams. The place looks great from inside, while the exterior looks like the usual "washroom" style Montreal architects favor these days. On the minus side, the building is located on the extremity of the gay district; the place feels sometimes like a pick up spot for males, which could get a bit uncomfortable. Also, the toilets are pitiful, especially for a building with such a suggesting exterior.
All in all, a most seen place in Montreal.