We had a great stay in Vienna! We did not meet Andrei, as he was not in Vienna at the time of our stay. However, arrival was easy enough with a very clear instruction :) Also great communication before arrival overall. The apartment was small, but cosy and fine for 4 if you don't mind not having a lot of space (otherwise the apartment is fine for 2). Great big shower! Very clean and nicely decorated. Good location, the neighborhood was a little quiet, but very nice and with some restaurants nearby. We walked into the city centre, but public transportation is very close!