The apartment is super-clean, quiet, comfortable, nicely arranged and furnished, and in a really excellent location. It was easy to walk (or bus) to the city center, major attractions, shopping, and metro, but we also enjoyed the immediate neighborhood a lot and discovered many interesting shops and restaurants. The apartment is probably best for a couple, especially if you are considering a longer stay, but the convertible bed in the living room is also comfortable and fine for an older child (as in our case) or third guest. Peter-Sylvester was a wonderful host; communication was good and he was there to meet us and see us off. He was also helpful with figuring out transportation and other practicalities (such as storing our luggage on our last day until our train departed.) In sum: excellent location, nice and clean place, organized, warm, and friendly host: we highly recommend this place to anyone visiting Vienna!