Overall the apartment met our our basic needs however @Elle is correct. The place doesn't look like in the images. An extra bed is in the living room, floors are concrete, place feels a little cluttered with boxes above cabinets and towels are bleach stained and need to be replaced. With that said, there were many positives and I still give it 4 stars. It's in an excellent location, close to public transport (U-Bahn, S-Bahn & Straßenbahn) and walking distance down Schönhauser Allee to Kastanienallee for amazing restaurants, night life and people watching in the wonderful Prenzlauer Berg area. You can get to the center of Berlin easily. The apartment is large and sleeps 6 (with the extra bed in the living room), beds are comfortable, it's relatively quiet and cool even when it's very hot outside, WiFi is strong and the kitchen has most of what you need to cook meals. As long as you know what you are getting you will be satisfied.
Two tips: 1) if dryer under window isn't drying, pull out drawer and empty water. It's a different technology than in the U.S., 2) be careful when closing front door. If you hold onto handle fully, you will slam your finger in the door.