Berenice was great -- super easy to communicate and helpful to help us find our way through Vienna administrative hurdles (we were moving to Vienna). She even let us store our luggage for a little bit after we left.
The apartment itself is wonderful, beautifully decorated and sun-drenched. The location is great as well, near U4 and U6 train and a walk from Naschmarkt and all the cool restaurants and bars in the 6th, 4th, 7th and 5th district. I highly recommend and will come back!