I stayed here with a group of university friends for three days as we did a mini break to visit the highlights of Berlin. The apartment was adequate for a short stay - four of us were in the main room (double bed and double sofa bed) and another person slept on the single bed in the kitchenette. Some of the guests remarked that the pillows were not very comfortable. The kitchenette is lacking in facilities so is not ideal if you plan to cook for the duration of your stay as there are only two parts to the cooker and some cutlery/crookery was missing etc. Additionally, the bathroom is small and there is only one toilet, so between five people it can be appreciated that it was a struggle to get ready. The area has good transport links and is close to many supermarkets and bakeries so it was easy to get a cheap breakfast and to access the underground.
The apartment was very clean, bedsheets were presented nicely upon check in, all given a towel and a chocolate which was appreciated, however when we arrived we weren't able to check in earlier (as it had been explained that our flight arrived at noon), neither leave our suitcases at the apartment. When we arrived the host was still cleaning the apartment meaning we waited on the street with our luggage for over an hour. When we returned the host had left, and we couldn't open the door so had to phone the host to explain how to access the apartment.
Overall, for a short stay the apartment was good value (we managed with the small space as a group) and has access to transport links to travel into the centre of Berlin.