Very nice apt, clean, confortable and calm. Location absolutely perfect, on the border of the historical centre of Vienna (5-10m walk from st Stephen's Dom) , with lots of shops and restaurants nearby, as well as underground station, bus and tram stops.
We stayed there during a week (July 2012) (couple + one teenage kid), and it was really enjoyable. Although we never met Anna personnally, we were in constant contact with her through e-mail and cel phone. She was very helpful, came to deposit a second set of key that we needed, booked our taxi from and to the airport, took care of our luggage on the last day, well, really a wonderful host!! Her commitment has been beyond words, we'll definitely book her apt again for our next stay in Vienna and warmly recommend it!

Peter
Brussels