The apartment was lovely. It was clean and tidy when we arrived and the location was convenient; we were at a nice and walkable distance from the city center. Everything worked well and heating was efficient and heated up the apartment quickly. Klaus was very kind and easy to contact. He also gave us very detailed information and instructions to check in and to use the household appliances. I can only say that I am very happy to have chosen Klaus’ flat as the place to stay during our trip to Vienna. Price and quality align, comfortable and it has everything one needs.