We loved this hotel. It is beautiful and clean. I am not sure what the mattresses are, but they are truly the most comfortable I have ever slept on; I wanted to take the mattress with me. The room we had was gorgeous.
The staff was incredibly gracious, and luckily, we worked with Ulla much of the time: she could not have been more helpful.
The breakfast buffet was the best we experienced in Germany - the variety was amazing. The servers were so cheerful. We ate dinner there twice. The first night was excellent, but on the second, I believe we were served leftovers. That would be my only complaint for an otherwise perfect experience.