I never tried Airbnb before, but I think this flat is above standard.
Everything was very clean and in good condition, and Sebastian is just a great guy. Due to mobile phone problems, he even picked us up at the Hauptbahnhof and gave us a lift to the flat - awesome service, really.
He does care a lot about his customers and all communication is always smooth with him, and he replied really fast.

We definately recommend Sebastian, and we recommend this flat to any others, be it families or students.

NB: Hot water will come after a while, the water heater in the kitchen does not hold much so when in shower, give the central heated water some time, and all is fine.