If i recall correctly, their are no single freshmen dorms on the main campus. Now, there may be some on the Vern. If that's true, i bet it isn't that hard to get a single.
Thurston is where most of the freshmen will be. 1k+ freshmen, the rooms range from doubles to six's (which every combination in between). Some say its old, a party dorm, they have their own strain of STD (xD)... etc
Potomac is the nicest/newest. It is a double/double suite. Most EDI/II students are in this dorm because they get priority housing.
Not a current student, so correct me if I'm wrong. Crawford has some singles, and is at Foggy Bottom. Hensley and Somers also have singles on the vern. Honors housing was at Thurston last year, but I believe it is moving to the Vern for next year.
I've heard you rank them including size. For example, your list may be Thurston double, Potomac double, Thurston quad, Thurston triple, etc. Again, I could be wrong. I do know that we get the housing application April 23rd.
You rank them by name, there's no choice for size. The only singles dorm is Mitchell and that's reserved for upperclassmen. However, freshmen can get singles on the Vern's West Hall. There are some singles in other dorms such as Crawford, but I think there is only 1 or if I'm wrong, less than 10. Usually these singles are for the handicap. The majority of you will end up with a roommate(s). And yes, Honors housing for the class of 2012 will be on the Vern. It's probably going to be in West or Somers since they're the biggest. It's also not true that it'll be easier to get singles on the Vern because 1) West has most of the singles 2) Honors kids are probs going to occupy them and they get priority 3) upperclassmen who want West also get priority 4) Merriweather, Cole, and Hensley each have like one or two singles.