In reply to Kelcat:
Depends what you want really, quiet sites are Eric Bynes <basic> near Birchen or North Leas <nice> above Hathersage. Its a walk from the town though if you want a few pints. I use the one on the road in to Castleton as there are great facilities there but it isn't cheap but handy for a nice shower and the castleton pubs. Edale is an option too with the choice of Coopers <basic> or the NT site, much nicer and quieter. This time of year they should all be quiet though, North Leas prolly your best bet.