It’s not a hotel, so don’t expect there are facial tissues, fridge and water pot. Many people would smoke just in front of the building entrance (not sure if they’re staff or visitors).
The room is quiet and the balcony view is superb. Staff is friendly and able to provide recommendations for activities to do depending on the weather. Location is perfect if you plan to go to Jungfrau, especially early in the morning as it’s just next to the Terminal and Grund station, 3 minutes walk. (There’s Coop in Terminal)