Oscar's apartment is absolutely fantastic--beautifully decorated, incredibly spacious, and with plenty of amenities (like a wonderful, modern kitchen, a wood-burning fireplace, television and stereo system, and jacuzzi tub). We were met by his mother who was wonderfully helpful with advice on restaurants, sites to see, etc.--plus she was accessible throughout the duration of our five-day stay via text message if we had any questions (she even secured firewood for us! Very kind and helpful!). Overall, one of the very best AirBnB experiences I've had. I would especially recommend this apartment for families or larger groups (there's a second bedroom with a loft bed above it in the back, aside from the couch and the master bedroom--plenty of room for people to sleep). It's only a few minutes walk to public transportation (the U station at Karlsplatz or the tram at Am Heumarkt) and only a few more to the Opera House--in fact, everything in the "Ring" is easily walkable. Great experience all around!