I had a wonderful stay at Katharina's. It is a beautiful, bright, and comfortable apartment. The kitchen and bathroom were clean, and I enjoyed having breakfast on the little balcony in the mornings. Katharina was away for the week, so I didn't get to meet her, but communication and check-in were both easy! The neighborhood is fantastic, very lively (but not too noisy), half a block to the subway, lots of bars and restaurants. There is an amazing bakery around the corner, and the falafel place a couple doors down doesn't look like much but is actually really good :) Would definitely stay again!