<p>There is not a single sub-free building. A hall is literally a hallway with 10-20 rooms coming off it, divided from other halls by corners and stairs. Most of the dorm buildings have at least one sub-free hall. I believe all of the freshman dorms do. </p>
<p>Singles are common, but some dorms have more than others. There are a few rooms with private bathrooms, but I think they are all inhabited by RA’s. They aren’t given out randomly to freshmen. If you had some sort of medical reason for needing a private bathroom you could probably get one.</p>