The "flat" is actually an adapted commercial space on the ground floor that gives directly on a street. It is separated from another real apartment by only a door therefore you can hear everything that is going on next door. It is also the first time I had to pay a city tax in cash without any receipt which was surprising. So for 1 night at 50€/night maybe for two at 92€/ (+ 9€ tax) a night it's a bit too much... Also given that they advertise several apartments in Berlin I suspect the advertisers are professionals which is supposedly against the rules of Airbnb if I'm not mistaken.