The place was as expected. Very clean, easy access and the location was perfect to visit the center with public transport. Josef was very reactive and helpful. With the metro you can quickly cross Vienna. The flat is only 3min from the metro U1 entrance and you'll get to the main train station (Wien Hauptbahnhof) in only 2 stops. We also appreciated that Tichy, a famous and delicious ice cream factory was just a few meters away from the flat!! try it! but there is a line in the morning :)) (and i think they are not selling ice creams after September though, you'll have to check)