We stayed at Karin’s apartment for almost a month. It had everything you need for such an extended stay. The apartment was just as described, nicely furnished, with good WiFi service and very comfortable. Karin is great at responding to all questions quickly and even checked up on us halfway through our trip to make sure everything was going well. The location is very safe, central to the city center, close to transportation and there are many good restaurants nearby. Definitely a great choice in Vienna.