This is a great spot for a quiet-yet-central stay in Vienna. The apartment is incredibly spacious and light-filled. It's on the 4th floor. Basically it's the top floor - there's a small level above but I think it's just storage, not other apartments. The unit was incredibly quiet, with one bedroom facing the courtyard and good soundproofing on all the windows. You're a 5 minute walk to Wien Mitte station, so it's easy to catch a train to/from the airport or main train station as well as subways and trams for the rest of the city. The neighborhood is lively with residences and some convenient shops on the street, but it's not noisy during the day and gets nice and quiet in the evenings. We came back from the opera one night and a concert another night - returning around or after midnight both times - and felt very safe. Jonny was easy to communicate with and accessible. While we didn't meet him in person, he sent us helpful arrival instructions and left the place in great shape for our arrival. This was a wonderful place to stay on our visit to Vienna!