Overall, a great trip and very comfortable accommodation that is good value for money. There were a couple of issues when we arrived in Berlin, in that a mix up meant the apartment we had booked wasn’t available. However, they called us to explain the problem and they were able to accommodate us in another apartment about 20 minutes away (a slight hiccup with picking up the key was quickly resolved), and then move us to the area we originally wanted to be in the next day, which included a room upgrade. Despite the fact that the trip got off to a slightly shakey start, the Nena team did their utmost to resolve the issue and the communication was excellent. The apartments themselves were very nice - modern, spacious, clean, well located, comfortable and warm, exactly what you need in Berlin. The beds were very comfortable and the showers both great. We would definitely stay in one of these apartments again and thank the Nena team for a wonderful stay.