Radisson SAS, Germany Radisson SAS in Berlin equipped their guestrooms with VingCard locks on all 427 rooms. What is special with this hotel is the hotel’s lobby; featuring the world's largest cylindrical aquarium. The Aqua Dom is 25 meters high and stocked with 2500 exotic tropical fish. This makes your stay enjoyable as you meet the underwater world and at the same time are able to experience the great view of Berlin. Each of the guest rooms and suites is tastefully decorated and contain all of the amenities you have come to expect from a 5-star hotel. The hotel has mounted VingCard's Classic lock with VISION software on all the guest room doors.