Very loud. There was pounding music until 2AM both nights of our stay. We also heard every Tram that passed on the rails in front of the hotel. We could have tolerated those things, but the worst was that we were lied to by the hotel about room charges. Unacceptable. When we checked in, we were told we could cancel the third night of our stay without penalty. This turned out to be a lie. When we checked out after our second night, we were told we were required to pay for the third night. We contested this decision but hotel management insisted on charging us anyway. Very deceptive practices. Do not stay here. Stay at the Karl Johan hotel across the park where we stayed a few nights before our terrible experience at Christiania Teater. Karl Johan is a beautiful hotel, comparable rates, much quieter, and they don't lie to you about room charges.