German Holidays

I have been looking on various websites to find a caravan site suitable in Germany near Cochem on the Mosel.  The CC website only has 5 in total for the whole of Germany and unfortunately they are not in the location we would like.  We are a family of 4 so we are looking for a site with playground, and or a pool but near to Cochem for the site seeing. 

The sites i have seen are either fully booked or i'm not getting any answer when i call.

Has anyone been out that way with their outfit and can recommend any sites that i can contact??

Thanks

Gareth