We have only great words for this flat!
It is beautiful with original architecture and high ceilings yet is very well renovated with a modern , well equipped kitchen (including a SMEG refrigerator! ), clean bathroom and very confortable beds and linens. They even were thoughtful enough to leave us cold drinks in the refrigerator which were so much appreciated after the flight.
The location is ideal - close to public transport and steps away from the trendy restaurants and bars of Berlin.
We highly recommend this flat and hope we can return one day!