I was in King's College halls which were a bit of a dump but were incredible because it made people sociable. Unfortunately they knocked them down because they were not the halls that applicants typically wanted due to being shared facilities and catered. Most halls now are in the flats arrangement where there will be 6 or so people in one block with a shared kitchen and all on-suite bathrooms. These are great if you like your flat mates but its all very secure and closed off meaning you cant actually access anywhere other than your block. It is the case that the more you pay, the better the room will be but quite often the nicer places are a little further from campus so especially if you are at Guy's you have to weigh that up. Wolfson house isn't the nicest of places but it is directly above Greenwood lecture theatre where 1st and 2nd year medics and common year one students will spend the majority of their time so is ideal location wise. At the end of the day you can make your room nice and I found that the worse the rooms are, the more likely people are to leave them and be sociable. Its the people that make the place.