Have just returned from a few days on this lovely site.  Even though it was the end of the season  the weather was perfect.  Grafham Water Caravan park is lovely, quiet and the cleanest toilet and shower block we've used (this is our 12th caravan club site this year).  This is a smallish site but well kept with lovely friendly wardens.  Being the end of the season the grass pitches were closed but plenty of hard standing and we had a choice on arrival.  There is even a semi resident owl who attracts lots of attention and is very amenable in posing for photos!!  One thing be warned the site shop isnt well stocked so take provisions. However there is a community shop in Grafham about 5-10 mins cycle ride away.   Close to Grafham Water so take your bikes.  Its a nice ride around the lake with a couple of cafes half way around each way as well as a pub in Perry. Definitely looking forward to our next visit.