There are four housing complexes, although one of them houses international CPs. Vista Way, Chatham Square, Patterson Court, and The Commons (for ICPs). There are four bedroom choices as well, from one bedroom to four, and it doesn't matter how many bedrooms you choose you will always have a roommate in your bedroom, so the number of people in the apartment is double the number of rooms (unless on some occasions when someone leaves early, or requests to switch rooms leaving you with an empty spot). Have your son look info about the housing complexes and get a good idea of which housing complex he'd prefer before going down, they all have pros and cons. Vista is known as the party complex, Patterson is known as the quietest place and doesn't have a bus stop directly in front of it so if he doesn't have a car with him he'd have to walk a little ways and around the corner to Chatham, and Chatham is kinda in between with the party/quietness.
Vista is also the oldest so its not as nice as Chatham and Patterson, Patterson is the nicest looking because its the newest.
The price you pay in rent will depend on the housing complex (Vista is cheapest, while Chatham and Patterson are a little more), and number of bedrooms (I think 1-2 bedrooms rent is the same per housing complex, and 3-4 is the same per housing complex) I'm sure rent has gone up a few bucks since I did the CP so I won't post prices, but I found the current prices for my CP on a facebook group dedicated to my programs semester.