Pros: The flat is clearly brand spanking new (still has the stickers on insides of cupboards)! and looks great with a nice shower. Communication from Nishma was great and it is very secure. The train to central is a little walk but stores and restaurants are very close by (Tesco opposite open til 11pm on sundays!).
Cons: There are bath towels but none of the little things you'd get in a hosted house - no handsoap or hand towel in bathroom, no teabags/coffee, - the kind of things you don't tend to bring with you. The bedding was clean but the throw was stained. My biggest problem was noise. I came for work and the walls are thin/gaps under the door so you can hear other guests chatting at night. The window to this room is at the front of the property onto a busy road and it is only single glazing. It literally sounds as loud open as it does closed. It gets a little quieter after midnight but then the garbage truck comes at 6:00am ish so it really depends how much sleep you want. Nishma recommended I buy earplugs but they didn't really work for me.
Verdict: I wouldn't stay again because of the noise, if you can cope with traffic noise or sleep on a busy road with an open window (or just get blind drunk) then definitely stay. Otherwise you won't sleep.