We stayed at Philipp’s place for 2 nights. We never saw him in person but communication was quick and easy. His apartment is conveniently located 1-2 minutes walk away from the station. The room had enough space but his pillows were so soft (think this is a standard thing in Germany). Kitchen was fully equipped. Only odd thing was that the wifi only worked well in the room. It completely disappeared if you were in the kitchen. Anyways, we basically just used his place to crash so it worked for us.