The stay was great! I would highly recommend this place! Advantages are:
1) great location to the largest shopping center Donau;
2) I arrived one day earlier and the Host did early check-in;
3) the Host also provided me bigger room;
4) I did not pay attention that on the website it is written no wi-fi, but in fact there is wi-fi in the apartment;
5) the Host is available and ready to help with any issues;
6) the Host also helps with documents confirming living in Vienna required for visa/residence permit.
Area for improvement is to disallow housekeeper to smoke everywhere in the house (kitchen, toilet and other common areas). For non-smoking people it is crucial not to smell this all day.
Please note that cleaning fees should be paid on top of rent.