We chose Ralph's apartment because of the location and the size, there weren't many options for eight people. It was even bigger than it looked in the pictures, plenty of room for eight people including two dining areas. The beds were all really comfy and the kitchen was very well equipped. The location was great and check in couldn't have been easier. Ralph even let us leave our bags on the final day which was really helpful. We'd highly recommend this place for a big group visiting Berlin!