The stay at Theresa's apartment made me feel a little bit like a Viennese. Great connections to the city center (also very easy to find from the airport - as well because you'll receive a nice description of the way from Theresa), lovely calm neighbourhood (9. Bezirk) and with Theresas friendly, attentive and very kind attitude it felt like home. Thank you very much for all your great tips!
Nothing to complain about.