Posthotel RössliPosthotel Rössli is a 3-star-hotel in the middle of Gstaad, Switzerland. It is the oldest hotel in the town.HistoryThe hotel, built c. 1823 and bought in 1844 by Bendicht Steffen, first opened in 1845 as a guesthouse; it also served as a post office. Since 1922, the Widmer family has owned the hotel, which is now operated by brothers Conroy and Lars Widmer.