This is a great apartment, very thoughtfully furnished in a wonderful neighborhood. The bus stop is right outside and Bahnhof Zoo and the S- and U- bahns are just a 5 mins bus ride away. Schloss Charlottenburg is very close and there are cozy neighborhood restaurants near Klausenerplatz and Schlossstrasse.
The kitchen, bathroom, and living area had just been redecorated/renovated and everything worked perfectly. I especially appreciated the large walk-in shower and the balcony with its garden. Kai was responsive throughout with any questions that I had.
There may however be some noise during the day, due to a construction site across from the back garden. This is the only reason why I gave a 4 rather than a 5 overall rating. The apartment itself is definitely a 5+.