The apartment has a very unique style and is extremely comfortably furnished. So you might find yourself in a situation, where you don't even want to leave the place ;). Which is a shame, because it's very well situated. You can reach all the famous tourist-spots easily via public transport.
The check in/check out procedure is very progressive and works just fine, so you are quite flexible regarding your arrival and departure. As a result you may not even encounter Dorian or any associated person. Which, again, is a shame because he is a very kind and helpful host.
We really enjoyed our stay in vienna and would reccomend Dorian and his apartments.