The Hiddens Rooms has lovely cocktails but some things let the venue down. When we went it was unbearably hot and humid so it really wasn't a pleasant place to spend a whole evening. There is also a ?1.50 charge everytime you pay by card, which seems excessive. We were there for a special occassion and had booked an area, and when we arrived the staff seemed really put upon when we asked to be shown to our area. I think the target age group is the affulent 40ish set, the cocktails aren't cheap (starting at around ?6.50) but were worth the money. The pros were that we didn't have to queue for long at the bar and the bar staff were efficient.