Klaus and Ligia are the perfect hosts. I met Klaus personally and he waited for me even if it was a bit late at night and he is super friendly and very quick with responses. He is the best host I have experienced so far from airbnb. As for the apartment, its a beautiful stylish and modern apartment, few minutes walk away from the nearest subway station so its easy to go into the city. It has everything that you need and more. Apartment has good heating for winter. I would definitely recommend a stay here and you will not be disappointed, especially since Klaus is available any time to assist the guests with anything. He also provided a map of Vienna and interesting places to go which was a nice and helpful gesture.