We really enjoyed our stay in Nena Aparments. The receptionist was friendly and informative.
The room itself was very clean. We had dishes for 4 people, however some glasses and cups were missing. Furthermore, we had a small dishwasher 👍 which is very nice. The room also had good wifi. Please note that the pictured room is not the exact room you get, however the room is very similar and contains the same furniture. Furthermore, we were there during a moderate summer week with lots of rain, however the room did get too hot for comfortable sleeping.
The location was great. With a 10 minute walk, you are in the bustling center of Kreuzberg with a lot of bars and restaurants. Furthermore, the busses are directly in front of the building and the subway is a 5 minute walk. With the subway and the busses you can easily get to other parts of Berlin.