I bought an ASCI camping guide from Lidl about 3 years ago and have used it regularly on motorbike trips to Europe and Scandinavia. I don’t know if the book is still available, but you can order a DVD and look at the following website Eurocamping[/url].
It has been great when riding the motorbike. When we get fed up or too tired of riding, out comes the campsite book and we look for the nearest one that is on (or close to) our route. If you check out the website, they have photos and descriptions of all the sites and a list of the facilities.
So far in 3 major trips, we have only been turned away from one site because it was too full and I can only think of one site (a huge one in Normandy) that was noisy and a bit grotty (although the facilities were great).
I can certainly recommend the ASCI campsites and there are over 200 of them listed on the website in Switzerland.