Through Eurocamp we ended up at this camping from 9-16 June 2008. It was very nice, many Dutch, lots of small kids during this period. The camping was very nice as was the pool. The location is fine, quiet and sufficient shade and sunshine. Beautiful mobile homes and tents. From the campings you can plan plenty of day trips by car for the area is very nice.
The George de la Ardeche route is recommendable, it starts at the village of Vallon Pont Arc; that way all the parking spots are on your right hand.
Labaume and Ruoms are also worth a visit.