There are few cities in Europe where you might want to go to see some innovating art - and Berlin is one of them. Naturally your unique hotel here will be everyting but boring! Expect individually furnished zebra-rooms, fancy bananas or huge beaks on the wall. Seriously!
Arte Luise Arthotel has a nice restaurant and bar/cafe with lovely courtyard area and is placed in Mitte area, famous for it's museums and art galleries. Easy choice.