The Dorint Kongresshotel Mannheim is located in the center of the lively metropolis between the Rhine and Neckar rivers. It is directly connected to the Congress Center Rosengarten, which is known for internationally important congresses, conferences and events. Particularly striking are the images of the water tower behind the bed headboards of the modern rooms as well as the large round mirror and the round panels around the TV. Appia renovated the rooms and corridors of the hotel in 3 construction phases: a total of 287 rooms, divided into the categories Standard, Comfort, Superior, Junior Suite and Comfort Suite.