We read about this in the Rough Guide and drove there on spec. They said they could put us up for one night, but not two as a group was coming. The next morning the proprietress, who was very helpful, said there'd been a cancellation and we could stay on; but we'd already made other plans. The location is absolutely unbeatable. DO take the perilous walk up the waterfall: it's a natural wonder. The hotel fuels itself and even charges its electric car from the waterfall. That must be why the lights are rather dim and flickery. But that's all part of the ambience. You could be in 1900, in a Thomas Mann novel, with big public rooms full of old sofas, books, pictures, pianos, doo-dads. Our room had a porcelain jug and basin, but there was a real Bathroom too, across the hall! One for gents and one for ladies, serving the whole floor. Likewise two toilets. The gourmet dinner was part of the package (just as well, since there's nothing else in the valley), and was excellent from beginning to end, so long as you didn't mind it being a prescribed menu. Breakfast likewise: this is Switzerland after all. Highly recommended if atmosphere and friendliness are more important to you than "special needs."