We´ve had a wonderful time in Michael´s apartment in Vienna. Check-in was simple and clear and the response of Michael (and his "team") on questions/problems was quick and very efficient. The short distance to the public transport (tram lines 6 and 11 and D a bit further away) makes it a very good starting point to explore Vienna.
The apartment is nice and complete and is with two separate bedrooms (and a room for kids), a nice bathroom a very good place to stay. A greengrocer and Billa around the corner to your right and a good Italian restaurant (Tomato) around the corner to your left makes your stay even more pleasant.
Certainly worth the stay!