The apartment is really cute and nice. Calm but very close to a subway. Everything what you need is in place. Very warm, no problems with the central heating and a hot water what was important considering the weather. 10 minutes walk to the Potsdammer Platz, 5 min to the Lidl supermarket. Martin is very helpful and hospitable. Wi-fi connection is good. What else do you need for a good stay with your family? :)