Ruth's apartment is as lovely as it looks. We are a family of four and stayed a month in Viena. We used the sofa bed in the living room, which was really comfy. We also cooked almost every night, and although the kitchen mostly has the equipment to make pasta, we managed to make some creative meals for our girls. Yet, it did have all the basic products you'll need, such as salt, sugar, oil and even some flour, as well as tea and coffee!
The restaurants located on the street as pretty good too. The Taiwanese one was a surprise and the little Greek shop (not the restaurant) serves great coffee.
The apartment location couldn't be better: it's away from the massive tourist crowd in the Inere Stadt, it's near cool shops and good supermarkets. You're a walking distance from the cathedral, from Naschmarkt and we even walked as far as the KunstHaus. It's also within a walking distance from some lovely cafés, such as Ritter, Jelinek and Sperl.
Ruth was kind to leave some toys for the girls to play with, which they loved. If you're travelling with kids, the apartment couldn't be better located. The area has loads of parks/playgrounds, such as the one behind the aquarium (although we highly recommend the park in Alte Donau).
We would definitely go back to Ruth's place and spend another full month in Vienna. The place we stayed made all the difference.