Peter's place is a place I recommend without any reservation. Starting from the hospitality, Peter offered to pick us up at the Airport as we were arriving at midnight, he offered this for a very reasonable and convenient price. His place was squeaky clean, the kitchen was fully equipped, and had all that one might need. The neighborhood was very quite and the apartment was super close to the U-ban which was very convenient. And above all, Peter was very nice to offer any extra help that one might need.
All in all, I recommend to anyone visiting Vienna to stay at Peter's place.