Considering the Art-hotel Charlottenburger Hof in Berlin?
A VT member wrote the following comment about visiting Berlin:
Hamburger Bahnhof by Jgiii
The Hamburger Bahnhof is a contemporary art museum located in an old train station. The space is beautiful, and even if the show going on at the time you are there isn't so great, it is worth a trip just to check out the interior. I happened upon a great exhibit, which made my visit all the more pleasurable. Don't miss the restaurant, a little pricey but the food is great.