I stayed three nights at Birgit's flat. The flat is really nice and the location was perfect for the purpose of my stay (participate in a conference in the vicinity). The flat is very quite, which is perfect for a good sleep, but the first two nights were very cold and couldn't sleep well because heating was not working. I'd advise you to double check whether heating works, if it doesn't, make sure you ask for extra blankets. Birgit turned heating on the third night, and so the flat became very comfortable and I slept perfectly.

It was unclear for Birgit and for my self whether the guest has to pay additional tourist taxation in Berlin. Since we did not clarify it, I did not pay extra money. I recommend you to clarify this before booking.