I was there this year and enjoyed every second of it. Sure the rooms aren't massive but they are bigger than GDS and I liked it (I have a lot of stuff, I kept a bike, cello, bass guitar and amp in there and still managed to have 3 people sleep over..).
While you may go into your room thinking it's crap, mine looked great once I covered the walls in posters.
The social aspect of wolfson is amazing, get to know everyone on your floor asap as they will be your first circle of friends and my floormates are some of my best friends (I'm the best man for one of their weddings if that's any indication!)
We had 2 working showers on the floor which were more than adequate, never had to wait to use one once.
The common room is a little pants but there is a free pool table there.. you can just go to guy's bar anyway which is literally <5mins away.
Some security staff are really nice, some aren't but you'll find out pretty soon.
Internet is all wireless and sometimes dodgy but I got dl rates of about 300kb/s and it was completely unrestricted (p2p works for example) unlike some halls.
oh and the sinks block if you vommit in them so use the toilet!
I'm not gonna lie but GDSA is nicer, however, wolfson has cleaners that clean up everything (other than your room) whereas GDSA has kitchen checks and their cleaners would sooner lop money of your deposit than hoover the hallway.
So in conclusion I would say wolfson is great value of money for its location (directly above the greenwood theatre which is where common year one have almost all lectures and most 1year medics). Sure you don't have a shower and toilet in your room, but how hard is it to take a 2-15sec walk to one that gets cleaned for you?