In reply to alanthomas:
I stayed at Symonds Yat East. We shared it with a party of drunken idiots playing loud noise (which they called 'music') and celebrating someone's significant birthday or something. Needless to say, they didn't stop their piss-up at any reasonable hour, let alone the official curfew: 2200. It was hell.
I have also stayed at Bracelands and had a good experience. It did feature many families with many children but I'd choose knee-highs over hooligans on any day - the latter are only noisy until they exhaust themselves and go to sleep.
I don't really know if it is the site or the clientèle who happen to be there at the time but I'd recommend Bracelands.