The location of Katarina's place is amazing, right on the doorstep of many great places in Berlin.
The accommodation was clean and well provided for, however could have done with being a bit more comfortable (fabric couches would have been nicer than the pleather ones), and a bluetooth speaker would have been very welcome :)
The beds are comfortable, and kitchen had plenty of utensils. Bring an eye mask as the curtains aren't block-out ones, and the arrival process is through a management company, just FYI.
Would definitely recommend staying here.