I spent 9 days in Renate's apartment in Winter and my experience was utterly positive. The apartment has some very lovely features, it is located in a self-contained area with many supermarkets (even a Billa which is opened on Sunday), a tram station, and a subway station nearby. Even though I never got to meet Renate in person, my check-in and the communication with Renate were all very smooth and unproblematic.