We had a great stay with 16 people in Peter's and Andreas' place. The space is ideal for bigger groups, with private apartments and a common kitchen/dining area. The only downside are the folding mattresses provided, they are not really comfortable. The place is next to the S-bahn, so super well connected to the city centre. We had some problems with the water, but that was fixed quickly and Peter/Andreas were quick to respond and let us know how long it was gonna be. Would recommend this place!