To a traveler who is both unfamiliar with Vienna, and looking for an easy Airbnb stay, do not use Nina's apartment. We arrived at her apartment after a 10-hour travel day and all we wanted was a hot shower and a clean bed. When we arrived, however, the apartment had not been cleaned since the previous guest had stayed. Since this was only a one bedroom, one bathroom apartment, we were forced to find other accommodations that night, which was scary and stressful. Nina did not answer our calls, messages, or inquiries. When she finally answered the next day, she apologized, which is of course appreciated.
HOWEVER, the awful part of booking with Nina is not the apartment, because I'm sure it would have been lovely if it were properly cleaned. Nina handled the situation horribly and instead of apologizing and issuing us a refund, she denied that this had happened and tried to blame us for the state of the apartment. This is disgraceful behavior for someone who is supposed to be hosting and welcoming travelers to their city, and I urge you to find other accommodations with a host who cares about people.