We stayed at Andreas apartment one week and it was really good! The apartment was clean, fully equipped kitchen, tidy and exactly as it looked in the pictures. Probably the best is the location..difficult to get more central! We only can comment on one detail and that is that we only had one set of keys (although we asked for more) during our stay and we were three people with different schedules. It went well with some more planning but it would have been nice to have those extra keys. I guess this is not an issue if you´re a family or a group with a common schedule. Overall, a really nice place to stay in central Vienna!