[@Mr Allen J] They're nothing too large or spacious, although three roomers are a bit bigger than regular two-roomers. In the case of two roomers, it's one window in the far back center of the wall upon entrance, with the window showing a view to the outside of the school. The windows cannot be opened, as they are sealed shut.
There are two beds inside the room, placed against opposite walls with the window between them. Each bed has an accompanying nightstand. There are also a pair of desks with chairs, and a pair of drawers. There's no bathrooms in the student dorms, as they are expected to use the public restrooms instead. If y'all would like, I could whip up a map to help envision the rooms.