I have stayed in this apartment for one week, it is located in one of the best districts of Vienna. Underground (U4), train station, restaurants and supermarkets lie within a 300-metres radius.
This was the second time I stayed in one of Zoya's apartments, and I am currently staying in another one again. The apartments were clean, and communication and check-in were always fast and correct, so I have no hesitation in recommending Zoya.