I had a 2-night stay in the hostel part of the building. There is a hotel/inn and a hostel with the same entrance, reception and shared facilities. A bus/train travelcard for the Engadin valley is included in the room rate. The bar area is nice and they do a range of snacks like sandwiches and pizzas. There is free WiFi, though some parts of the building are better covered than others.
The hostel room was a 6-bunk room with a shared shower, WC and basin. I don't think the lockers will accept padlocks. You can get a towel from the reception desk.
The breakfast buffet is simple but good quality: Bircher muesli, croissants, bread, ham and cheese, yoghurts and fruits. Fruit juice in jugs and tea/coffee on request. Just what you need if you have an active day planned!
It is a cycling-friendly hotel with a ski room/bike room and cleaning facilities for the bikes.