That is if you are in a Mod. You may not be. If you're in the white buildings you'll be either 2 or 4 to a room (depending on course size), and the floor will have a large common washroom for each sex. There's also one large TV room per floor in these buildings as well. Laundry facility is basically 2 machines per sex, per floor.
For the mods, ours had one washer & one dryer in each mod. (20 students per mod)
Being in a mod is definitely the preferred location, but it all depends on how busy the base is for where you'll be.