Actually 5 stars, with the exception of the sanitary facilities which could be slightly better, but this is actually overshadowed by the pleasant atmosphere and helpful attitude of the owner/father of/staff! Plenty of (flat) spots to choose from; just ask, no problem. Renting a bike? We'll arrange it. Adding a day? We'll do it! Eating in the red bus next to the campsite (not from!) is doable; if it's closed, there is the surprising vending machine next door. Not cheap, but that is Rügen. Highly recommended!!