Katinka's place is beautiful, such a stylish and unusual apartment space. It's in a GREAT location for exploring Berlin, and also chilling in neighbourhood spots - there are plenty of good bars and restaurants in the area. The flat was super quiet as it was removed from the main streets so there was no noise in the morning if you need to sleep off a few too many wines the night before ;-)
Katinka was a great host, really easy to communicate with and super quick responses throughout the process.