Katarina was extremely responsive and gave me good advices on transportaion from airport and on places to go and to eat. The location is simply perfect. It's located in the heart of Berlin where many touristic sites are just walking distance. Also, all public transportations are very close for going anywhere in and out Berlin . There are tens of resturants ( German, Italian, Chinese, Japanese, Indian, Turkish, Mexican ....etc ) in surounding that suit every taste. Also, a big super market only 4 minutes on foot and a huge shoping mall only 6 minutes on foot. The apartment is spacious and sunny. The beds were comfortable and big. All in all, I highly recommend Katarina' s apartement and if we returned back to Berlin, we would love to stay in the same apartement again.