I think anything in these situations can be looked upon in both good and bad light, but i think i'd rather be in a long hall like situation than a self contained block of 8 rooms in a way, seeming as a lot of people have seemed to say that they made a lot of their friends in their halls. For instance in Gowar as far as i know all the blocks of "flats" need your doorkey to get in, so there won't be people wandering around so much in the first week for you to meet.
I think i'm making pluspoints at the moment because i'm just glad i got ANY accommodation at all (I speant the days up to getting my allocation fearing that i would end up being given a shared room, which could quite possibly be my worst knightmare ¬_¬).
All that and the fact I've been a bit of a recluse for the last few years while at college, and being in a social hall will probably help me.