Nina’s place is great! I stayed there when I was attending an August conference in Vienna. It’s an easy walk from Nina’s place to St. Stephen’s cathedral, a lot of restaurants, the paths along the Danube canal, and the train to the airport. The apartment has air conditioning which is really nice and somewhat rare in Vienna. Many of the conference attendees were staying in hotels without air conditioning, and there was a heat wave going on. I felt very lucky in my choice!