Awesome place to stay! Ulrike is very friendly and has helped me a lot during my stay. The apartment looks very beautiful, is stylish and is well equipped. The garden is gorgeous. I've stayed there with a toddler and brought some toys, a baby bed and a high chair, which was perfect. I had a lovely time in Ulrike's house and I can highly recommend it.
P.S: it is also very centrally located, just 5 min from metro, which leads you in 4 minutes to the Bergmannkiez in Kreuzberg-a nice area to go out.