You can pay for your room when you check in.
12 x 4-person rooms 18,80 € (shower and WC in the hallway)
  4 x 3-person rooms 32,80 € (shower and WC in room)
  1 x 3-person room 18,80 € (shower and WC in the hallway)
  9 double rooms 32,80 € (shower and WC in room)
  5 double rooms 18,80 € (shower and WC in the hallway)
  8 single rooms 43,80 € (shower and WC in room)