My husband, 15-year old son and I stayed 4 nights at Theresa's lovely flat in the Neubau neighborhood of Vienna. The flat is spacious and well-maintained with beautiful views from the primary bedroom and the upstairs lounge, comfortable beds and modern bath. It being winter, we didn't spend time on the rooftop but I could see it being a lovely spot in the summer months. Only minor complaints were that the flat was a bit dusty on the fixtures (it had been cleaned otherwise) and not as well-supplied with towels and other products such as toilet paper and paper towels as some other AirBnBs; but all in all minor infractions relative to the overall experience.
The real win was the neighborhood. Many great restaurants and cafes nearby (our favorite was Stella) and great access to the main shopping area of Neubau as well as an easy walk to the center of Vienna. Easy bus which we took several times. Grocery store directly across the street. We would definitely stay again!