We have found a quiet and nice accommodation. The flat is in a good location, because it is just few minutes from an S-bahn station and very well connected with the Schonenfeld airport. Irene and Christoff were hospitable and helpful, but we have never met Irene but only Christoff and we hadn't expected him before. Moreover, we knew of a Berlin city tax of 1,50 per day only when we arrived. Therefore, I suggest a more precise announcement.