Overall a very pleasant place to stay. Apartment was exactly as described and shown in the pictures
Two points that should be clarified: this apartment is not wheelchair accessible. There are several steps into the building. The elevator stops on floors 0, 3, 6, and 9. So since this apartment is on floor 2, you must either climb 2 flights of stairs, or take the elevator to 3 and walk down one flight. This is included in the description, but I think is worth repeating again.
Second, there is a washing machine but no dryer, just drying racks.
For anyone visiting Berlin for the first time, this apartment is in the old East Berlin so the neighborhood is a bit grittier than what you will find in the old West Berlin. But it felt safe and was an easy walk to UBahn, SBahn and trains, which we liked.