The apartment is spacious and located in a nice and very quiet area, yet few minutes walk from Wien-Mitte station and also walking distance to Vienna's city center.
Rainer took good care of us at check in even in we arrived in the apartment past midnight due to a late flight.
He was reachable at all times and flexible with taking care of our luggage after check out.
We can definitely recommend this place in Vienna and Rainer as a host.