Last year I saw a grown man learning next to the little kids at the Vreni Schneider Ski School (former Olympic champion) in Elm, so maybe try there? I recall them being very friendly.

There is a hotel walking distance from there that we stayed at during the sportferien last year, and it wasn't fully booked. It's nothing overly-special but has clean rooms and the food was pretty good! Oh, and small pool.

http://www.vrenischneider.ch/
http://www.sardona.ch/sardona/web/index/index2.asp