We recommend staying at Sorell Hotels - Hotel Sonnental 
To use SWII group reservation and group rate (all rooms are at own expense), kindly:
Email your reservation to Ms. Baase on the following email sonnental@sorellhotels.com

Group reservation code is: SWII
Rates: Business Single Room CHF 130, Superior Twinbedroom to single use CHF 160. 

Reservation is on first come first serve basis.