We arrived during the day,but stayed also over the night as well as other 2 vans. Payed for the whole stay (10chf for less than 20h) and no one bothered us as it was empty during the night.Big minus- there are no amenities,no water to fill.Still it was a pleasent stay with a river running just next by. Great plus is that there is a gondola to Ristis and Brunihutte really close by.