The apartment was perfect! It looked just like in the pictures, was super clean and the location was terrific. There's any kind of amenity you would need within a short walking distance, great coffee nearby (coffeehouse booth near the university), a couple of Billa supermarkets and some nice restaurants.
The city center and most of Vienna's top attractions are within a walking distance and we hardly needed to use the subway. We traveled with a toddler and the hosts were kind to offer everything we needed for the stay (crib, high chair), just keep in mind there are a couple of stairs at the building's entrance.
Communication with the host was nice and quick through the app.
Highly recommended!