Our stay at Tulay's apartment was absolutely wonderful. It is an elegant and comfortable home with every amenity you might need.
Communication was incredibly easy and Tulay is very quick to respond to any messages. Check-in was very easy (Tulay welcomed us herself and was so nice) and the host was very accommodating of our schedules (we checked-in late and also enjoyed a late check-out).
The location of the apartment is quite unbeatable. We walked pretty much everywhere and there is a huge choice of restaurants, shops and supermarkets in the neighborhood.
There isn't much else to say, it really is the ideal apartment to explore Vienna from. We would 100% stay at Tulay's again on our next trip to Vienna.