we enjoyed a one week stay at carls lovely flat as a family of four. The apartment is located in a nice area, with all the touristic sights and the central train and bus station in walking distance. There are also plenty of shops and little cafés around. The flat was perfectly clean when we got there, and even though we didnt get to know carl in person, the communication worked perfectly. The flat is also way more spacious than it looks on the pictures :)