While taking us to Peter's place from the airport, our driver said that the location is superb and he was right. It overlooks the charming Am Hof, which was hosting the Easter market when we were there. Our children were delighted each evening by Olafur Eliasson's Yellow Fog installation right across the street. The place is spacious, clean, and central to everything you would want to see in Vienna. Not sure if the swanky Park Hyatt around the corner could deliver much else you may need. Peter himself was a gracious and helpful host. We would definitely try to stay here again the next time we're back in town.