I highly recommend Katinka's apartment. It is very well located, conveniently at few minutes walk from U4 subway line. The apartment is in a very cozy, calm and atmospheric area of Vienna and although may look far from center it is easy to travel around Vienna due to excellent public transport. The apartment is very clean, with excellent amenities, as advertised and it was actually better than we expected, we lacked nothing. We stayed a longer period (2 weeks) as a couple and we felt like home. Katinka is a very welcoming and friendly host, quickly responsive to messages and she was very flexible with our check in and departure which was at unusual early hours. Thank you very much for a great time in Vienna and we will definitely return should we will have the chance!