Katarina is very nice and enthusiastic, she gave us tips about transportation and where to go in Vienna; we felt welcomed at the place. The apartment was clean, the bed (I slept on the couch in the living room) was very comfortable. The place is spacious and provided with all necessary equipment like hairdryer and electric kettle, free tea in the kitchen, and even some shower gel and shampoo available in the bathroom. The location is very good, close to the city center (walking takes 15-20 minutes), close to a subway station - very convenient. The street is wide and busy, but the apartment is quiet. I and my friends had great experience there.