Mmm as stated in an other review this isn't a restaurant but an hotel.
It exist in two parts. We stayed here with a group (a bus tour). The hotel was clear, and I had a good sleep in the night. It's near to Vienne, easy by train to reach.
But...why I only rate it one start: the staff...they are really unfriendly. At the dinner table the waiters were harsh, ...thank you they don't know...also the food wasn't very good. It was buffet, but when you where late, there wasn't anything left (our tour guide organised an acitivity and agreed with the staff we would be late, 50 people late and here was nothing left or at least not enough)
It's not a 4 star worth hotel....If the staff would be a little bit more friendlier and the food enough, I would rate it 3 or 4