We had a great stay at Luis' apartment! We met Viki, she was very helpful and explained us how everything works with the subway etc.. The apartment is very well located and in a calm environment, we slept very well on the sofa, and it is also very well connected to the city via 2 tram lines, even early in the morning and late in the evening. The kitchen was equipped with everything one might need and there were some extra towels and bed sheets. We loved the apartment and had a great time in Vienna!