Subject: Super-cheap sleeps in London?
I'm doing a quickie 6-night trip to London in early May, and was wondering if anyone knows a really cheap place to stay that's central (esp. in Paddington, Bloomsbury, and Victoria areas). Most budget B&B's seem to run about 35 pounds a night and I'm hoping to do better. I don't mind spartan surroundings as long as they're clean and quiet.

Unfortunately, the rooms at colleges won't work, since I'll be there before the sememster ends.

Thanks in advance for any and all ideas.