Light and spacious 2 bedroom apartment in center of Berlin

I have a light and spacious apartment to exchange with. It is located in the center of Berlin close to Philharmonie, Neue National Gallery with many restaurants and galleries in the area. I'm looking for something new preferably in Charlottenburg or Wilmersdorf. I'm open for the size of the apartment, it is more important that it's a beautiful and special place than anything else. It should not be ground floor. Thanks and look forward too see what comes up.