Haven't been there as we did a day trip only. I yet think it's a nice accommodation. If you like check out their link below. Quietly located in a residential area, the hotel is conveniently close to the city and congress center, train station and motorway. "Close" means probably still a 10mns walk.
Theme: Hotel
Directions: Best Western Delta Park Hotel Keplerstrasse 24 Mannheim, 68165 Ph: 01149-621-4 45 10
