Tony sorry I could not reply last night but below list of sites.
Prumtal Camping, 5 star. Oberweiss near Bitburg is excellent you must try restaurant. Page 210 in ACSI Camping card book Site no. 466
Alisehof, 5 star, Bad Rippoldsau-Schapbach is excellent the owner Kurt is so helpful, New toilet/shower block fantastic. Good place to tour the Black Forest from. Page 178 Site No.371.
Both these sites we have been to many times and cannot fault. Will be back at Prumtal mid June on our way home.
Winkle-Landthal, Bishofsweiesen, near Bertchesgaden 4 star. Page 181. Site no 381.
It was the first time we had visited this site but we liked it we would go back again. So much to see in this area Eagles Nest, Konigsee, Ober Salzburg and of course Salzburg itself. Before we have stopped at a site nearer the Konigsee but it was not ACSI.
If you venture to here at Ossiachersee near Villach there are many ACSI sites but we have been coming here to Jodl for 6 years now staying 5 weeks at a time. Family Thaler own and run the site which was opened over 60 years ago and the first one to open on the Ossiachersee. Jodl Camping, Alt Ossiach (which is at the Eastern end of the lake on the Southern side). Page 271. Site no 628.
Hope this info will help you. Any more help? Contact me. Happy Holiday.