I have been to three campsites in Switzerland so far this year. The TCS Campsite in Zug which was right by the train line, I wouldn't recommend it.
Just got back from the TCS campsite in Fontinvas in Disentis, this is a lovely campsite right by the Rhein and is on the rhein cycle route I think.
Our local municipal campsite in Wetzikon which is a good spot for exploring the Zurich Oberland.
http://www.reisen-tcs.ch/travel/de/home/camping.html
https://www.wetzikon.ch/Stadtleben/s...platz-auslikon