Markus was a really good host. He was very active in communication.
The location of the house is good. You are really close to U-bahn, and therefore the city centre (like stephanplatz and museum quartier). Also the tram-line which is very near to the house is really smart for transportation.
Home is also clean. The building was safe. Fully nice experience for 3 people. If you are a couple, it would be better.