Radisson Blu Berlin is the most exciting hotel in Berlin Mitte. It is featuring the world's largest cylindrical aquarium in the hotel lobby. The Aquadom is 25 meters high and stocked with 2500 exotic tropical fish. Reserve a room with ocean view! Enjoy this underwater world and experience the unique views of Berlin from one of the 427 bedrooms. Each of the 427 rooms and suites is tastefully decorated and contain all of the amenities you have come to expect from a 5 star hotel, including the stunning views of the Berlin Dome, the river Spree and the ocean view of the AquaDom.