We spent almost 3 weeks and we had an amazing experience in Roland's place. The house is amazingly located: 3 minutes from the U3 tube, 2 minutes from Mariahilfer street (very long pedestrian shopping street) and 15 mins walking from the center. It is easy to find everything you need in the area.
The house was clean and very well furnished. We did not miss anything we need. It was also really cool to use the projector, connected to the laptop, to watch movies.
Thanks again Roland