I stayed at the Berlin Hilton in June. I was not put on the Executive Floor, but was given access to it. That works for me; I don't mind taking an elevator a few floors up.
I enjoyed the location of the Hilton. It was easy walking distance to the Pergamon Museum, one of my all time favorite museums in the world.
The Hilton is about a 2 block walk from the Four Seasons. Paparrazi were camped out front; Madonna was due in that night for her Berlin concerts. She had booked a suite at the Four Seasons, but rumor subsequently had it that she put the family and entourage up in a villa on the outskirts of Berlin.