All of the dorms at Canisius are relatively new and well-maintained. They aren't particularly spacious, but they're not bad compared to most colleges. Of course, it's probably smaller than what you're used to at home. The three main residence halls—Bosch, Frisch, and Dugan—are centrally located on campus, and it's only a short walk across the quad—or through those lovely warm tunnels—to your class in Old Main. The distance is the same to Lyons Hall, but there's no tunnel. The Health Science Center is a bit of a hike from the rest of the campus, in general.
Every floor in each residence hall has a place for socialization with tables, chairs, couches, and a kitchen. If you opt to live in a suite, you have a choice between a shared bathroom or a shared lounge area in between, which is nice for having visitors over. Most people leave their dorm doors open or unlocked almost 99 percent of the time—even if they're not there. It's not necessarily a great idea, but it is what it is. If you're there and don't mind anybody dropping in, go for it. But if you're not going to be around and would mind someone snagging a snack from your minifridge or perhaps something more valuable, just lock your door.