Passes are done before lunch on the first day.
I am not sure if cheap, quiet and pleasant go together.
I found a cheap and pleasant place that wasn't quiet (although other people think that it is OK). So I have gone for expensive-ish, quiet and pleasant at a well known convenient hotel.
PM if you require phone numbers.
Going rate seems to be £90 a week for 'cheap' accom and there are a number of places owned by BA staff (not including those on the Cranebank list), who specialise in renting rooms to people under training.