Mary Washington. I lived on campus all four years and loved it. There was no requirement to do so, but it's a small college and most people did. I believe there is now upperclassman apt.-style housing, but it's still pretty much on campus. I had no desire to deal with renting an apartment when pretty much everyone was hanging out together on campus.
Oh, and I was perfectly able to deal with renting an apartment, paying utility bills, grocery shopping, and working once I graduated. Just didn't want the "arrested development" PP to worry too much.