Some places are..... well ugly but grim!? not so sure about that.
I live in DRA now for my second year (ensuite self-catered) which is, in my opinion, a very nice looking place. Its basically 15 buildings with 11-12 flats in each, each flat housing up to 5 or some cases 6 students (who due to close contact you get to know VERY well). It has large rooms with a double bed, TV and free internet access. The kitchen is well equipped and even has a dishwasher (which no other hall does) but can get a bit cramped if everyone decides to cook at the same time, but that doesnt happen too often. There is also a living room area with 2 sofas where you will spend most of your time with your new flatmates.
Downsides - ridiculously expensive, looks great at first but after a while cracks start to show where the builders have skimped on quality a bit, can be a bit hard to get to know people in other buildings and the only Hall where rooms are inspected but not cleaned which is a pain when all the other Halls either get away with it or get it cleaned for them.
There you go, a quick overview of DRA, any other questions just ask, I also know bits and bobs about other halls too but having never lived anywhere but DRA they would probably be better answered by someone else