I stayed at the Bellevue hotel in March 2013 and was there with friends for a skiing vacation. As a whole I am disappointed with my stay and would not recommend the place.
The hotel building, its entire interior and furniture make the impression they come from the early 80s, the reception area and "lobby" are quite unwelcoming and small. If you are lucky enough to get a room with a lake view, you will probably find it nice and spacious, but the rooms on the back side are very small with an even smaller bathroom that gets flooded every time you take a shower. I also had a hard time sleeping, because it was too hot in the room and the air was extremely dry.
The indoor swimming pool is not very big, but actually fine, the sauna is badly maintained and was often too cool.
Most of the staff, including the lady that hides behind a computer at the reception desk, are impolite and badly trained. They get nicer when you order drinks at the bar, but will still charge you a small fortune for a bottle of water at dinner that's not even guaranteed to be mineral. If you try bringing in your own drinks from outside, they will fine you with 30 Euro.
Breakfast was nice and there was plenty of it, but it offered the same choice every day plus juices that you wouldn't normally drink. The meals that were served for dinner didn't exactly match what you've ordered and were small and insufficient after a day of skiing.
However, the worst imression was left not by the hotel and its staff, but by the owner. One day, he just arrived with a bunch of friends and his sons and the hotel suddenly started working only for them. Furthermore, they parked their huge Mercedeses right in front of the entrance and left them there for days. And the owner's attitude towards the guests can simply be described as extremely rude.
As a whole Bellevue made an impression of a family hotel run by moody people, offering a service dating back to the 1980s. Definitely not a 4-star hotel.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.