Place is just fine to make a base for your sightseeing in Berlin. Near apartment there are lots of shops and its quiet, peaceful neighboorhood. I personally love places like this, because after spending whole day in the loud and crowded city center you can come here and chill out in peace. Contact with Kristina was great. She responds to messages very fast, even though we didn't have any problems. One minus of this apartment is the wi-fi which was performing very poorly & sometimes didn't work at all during our stay. Anyway, would recommend this place to anyone and definitely would come back.