My wife and baby girl stayed for Easter Holidays in Philipp's place
We did not met him, instead, her lovely mother welcomed us. Communication was always great and we even got asked a day before our arrival if anything special would be needed for our stay.
The place has just a perfect location, just in front of the Belvedere Winter Palais, 2 minutes away from the cathedral and 20 minutes to the Museum Quartier, not to mention its just steps away of a very lively pedestrian street with shops and restaurants.
Huge bedroom and nice kitchen and living room, just as shown in the pictures.
Despite the fact of being in the heart of Vienna, the apartment is actually very quiet at night, as you first enter an inner building patio and from then you get to the 3rd floor by elevator
The only thing i missed was a WiFi connection, although i knew from the begining i wouldnt have one.
Overall we had a great time in Vienna, mainly because of the perfect location of the apartment!