I lived with Nicolai and his family for 2 1/2 months. He and also his family were very nice, always helped me when I needed something and yet I had enough privacy.
The location is perfect, the nearest train station is 10 min walk and the metro station 5 min walk and also the city center is within walking distance. Thus central, but still quiet and I felt comfortable and safe there.
The only thing I did not know before arriving was that Nicolai and his family have a dog, but that was no problem for me, he is small and sweet and mostly knows the boundaries between the area of the family and the guest and if not he can easily be "pushed out" of the room again ;)