I had a wonderful time at Kiki's place; the actual apartment is quite a bit nicer than the pictures describe. I felt very comfortable and secure there and loved all the amenities, including a large standing fan, extra pillows, and kitchen appliances. The apartment was very clean and quiet as well, and had some lovely vintage touches. It is also centrally located (right off a tram stop and a short walk from the subway) and I enjoyed the self check-in. I would love to stay there again when I visit Vienna next! Just a heads up (as you may have read in other reviews) that the apartment is a 4th-floor walkup and there is no A/C. The locks also open/close in the reverse direction from American locks (and require an extra turn). Nevertheless, the benefits far outweigh these minor advisories!