Heidi’s place was perfect for me. I stayed at her place for a quite long period because working in Vienna (at the University: connection to Schottentor really easy and fast). The flat was super clean and trendy and with all the comfort. There is a metro station 3 min walking, which is serviced by two different lines (U4 and U6). There is also a tram station really close. For tourist I can say not to be worried if the flat is not exactly in the city center because through these public transports it is really easy to reach the main touristic places. Plainty of super market and all necessary stores close to the flat. Finally, Heidi was super kind to me and available whenever necessary :)