We had a fantastic time at Stephanie's apartment. It's was perfectly located and looked just like the images. The place was clean and we had plenty of room for two people.
Stephanie was incredibly helpful, letting us check in early and out late, which was very helpful as we were at a conference. After hearing it was our first trip to Berlin is sent us an email of fantastic places to go.
I would definitely recommend anyone wishing to stay in Berlin to stay here for a great apartment and a great host.