Ka Hou was amazing post to my wife and I! He has a wonderful location located right next to the U-Bahn station that is only one station away from one of the best hubs to explore Vienna. The location was as described by his post as well as other reviewers. It was very clean, he was in great communication with us regarding directions and check in, was very accommodating for our check out plans. Location felt very private, but he was always available for any questions. He is one of the most welcoming hosts we have worked with. We would definitely stay here again in the future.