Marion and his wife were exceptional hosts. We arrived a bit late due to bus delays and were afraid we had missed the check-in time but Marion was patiently awaiting us in his office and home upstairs. The check-in process went smoothly; Marion provided us with a folder of local restaurants as well as print-outs of the main transportation lines serving the area. There was even a small bowl of chocolates and water that he left on a table for us - after a long day of traveling on the bus, even small gifts like these make the world of a difference. On the last day, we realized we would need a paper copy of our airport shuttle ticket for our next destination and Marion helped us print out a copy at midnight (really saved our butts in Rome!).
The house is more or less a studio - very cozy and the interior is decorated with a sort of Andy Warhol pop color theme. Everything was extremely clean from the bed, the tiny kitchenette, and the bathroom. It is a bit far from the city center (~40 mins), but the S4 train was only a 10 minute walk away and takes you directly to the central areas (Marienplatz, St. Peter's Church, Church of the Lady).
Would totally recommend!