My husband and I stayed there for 5 nights. Günther and Elisabeth are fantastic hosts! They were always quick and polite with their communication. Check-in and check-out is really easy and the apartment has lots of great amenities (washer, fridge, TV, etc). The apartment is centrally located and very close to a metro stop. For the most part it is quiet but there was street noise in the mornings (trash pickup I think) from ~6:30 to 8:00 am that for us was difficult to sleep through. Apart from that we really enjoyed our stay.