The flat locates in quiet place, 12 minutes to the subway station Margaretengürtel by walk. There very convenient line U4: 10 minutes and you would be reach to Karlsplatz station. There near to station Karlskirche church, Wiener Staatsoper, Hofburg, Kunsthistorisches Museum, Naturhistorisches Museum Wien and many more.
In the opposite direction U4 locates Schönbrunn, way from Margaretengürtel would be takes 10 minutes too.
So, i think this flat it's good option for tourist in Vienna. In flat you will be able to find all things what you need for comfort living there.
Thanks Wolfgang for text message support and Hallo aus Kiew))