I stayed there for 6 nights while exploring the Jungfrau area and I made a good choice. First, the everchanging lake view from the balcony was awesome. I could never get tired of it, because it kept changing with the weather and lighting. The single room was small, but I didn't care; it had everything I needed. Staff was always friendly and helpful. Breakfast had all the standard fare as well as fries, which seemed odd. Also nice view while eating breakfast.
I did not try out any spa or exercise room activities.
It is a bit remote, and while there was frequent bus service I think a car is most appropriate.
I was there in June, 2026, and the restaurant did not really serve dinner. Some snack type fare was available.
Forfaits