Dan's flat in Vienna is in the most central location possible. If you are arriving to Vienna by air, then an airport bus will bring you within 5 mins walking distance of the apartment in just 20 mins. And the tram and Underground stations are even closer. The Opera and Karzplatz are within walking distance as well. The apartment is compact and had everything that we needed for an enjoyable stay of 3 nights. Dan is a great host, he explained everything to us in great detail and was very responsive to our questions. All in all a great stay and we thoroughly recommend his apartment for your stay in Vienna!!