Thomas was great host and very welcoming. It was my first time visiting Vienna with my parents and he provided so much useful information on our date of arrival. Apartment is very clean. I wouldn't say it's walking distance to major areas but there is main train station, tram station, and subway nearby which takes you to wherever you might go. We felt safe walking back to apartment late at night. Only thing we wanted to say is that in the bathroom, we could smell cigarette coming from other apartments through the pipe or something.