It depends, in Arthur Tattersall there is a vague pattern but there are exceptions. Basically think of a flat with 5 rooms, each with 2 people in (shared rooms mostly in Arthur Tattersall) - then each flat has one kitchen with 3 fridges and 1 freezer (no one freezer is not enough but deal with it). There are 3 toilets per flat (one toilet has a bath in it) and 2 showers, all complete with doors and locks. Rooms are not ensuite I am afraid, but do come with 1 sink, 2 wardrobes, 2 beds (duh), 2 desks, 2 small tables (if your room is big) and 2 chairs.
The kitchen comes complete with aforementioned refrigeration, 2 ovens, 2 grills, 2 hobs, 2 sinks, several chairs (both upholstered and plastic), 1 large table and 1 or 2 bins. There is no common room, the kitchen generally serves as the gathering place of the flat.
Toilet paper is not provided as standard, although you might get lucky like we were last term and have a cleaning lady who is stupid and does not know this (she gave us loo roll intended for a different house).
The office is open 9-5 weekdays and is where your post will arrive. Any packages arriving on weekends will be returned to the post office because our offices are staffed by lazy bitter people. The staff are pretty average, a bit incompetent and bitter but they usually get the job done. Also the wardens (who will answer the emergency mobile that you ring in the event you lose your keys) will hate you more and more as you keep ringing them up at 5am drunk because you're locked out.
Don't get too put off by my description, as much as I may sound a little bit pissed off at my accom I do love it, sharing a room is sometimes a slight inconvenience but it's nice, and I've met all my best friends here. Oh did I mention the fact that Arthur Tattersall is located opposite UCL? Yeah that's bloody fantastic, I will sorely miss rolling out of bed 10 minutes before a lecture (and arriving on time).
Basically Arthur Tattersall is pretty good, damn fantastic considering its price (approx £75 a week) and location - never again will you live in such a prime location for so little, especially considering you are a student and should not be picky at all.
Oh also there are mice, and cockroaches if you live in the basement. BLAH BLAH get over it, cockroaches do **** all and the mice are actually kind of cute (we've named all of ours, Charlie and Mildred with their children Alvin Simon and Theodore). It's London, be bloody grateful you don't have rats.
Sorry for the slight ranting in this post but last years experience has taught me that there are bloody loads of people who whinge, bitch and moan about things like "oh no I won't accept a shared room". You will all soon learn to live with it.