I've rented the flat for my parents who visited me in Vienna. Ellena is a very nice host, and we did not have any problem while pre-agreeing about the renting, as well as during the stay. She is very attentive and friendly, was available over phone at any moment. The flat itself is exactly what you see on the pictures - very clean, comfy & lovely , big enough to accommodate 4 people, grocery shops are just around the corner. It takes some 20 min to be at Karlsplatz (centre of Vienna) - what is very convenient for tourists. All in all - great experience!