We stayed in Gerhard & Nicole's apartment for 2 days. It was very lovely, nice and clean. It is just near to the corner of Neustiftgasse and Neubaugasse and just 800m to Mariahilfer Strasse. We ate their welcoming organic fruits ( I think their own product). Thanks for them. We couldn't meet them in our visit. But their neighbour Traute welcomed us. She was nice and helpful.