We stayed at Michael's apt for the Christmas holiday with our family of five. It was the perfect apt for us, providing beds for all, and lots of space, in addition to having very comfortable shared spaces. The kitchen was well equipped and large, making cooking a fun experience. Michael was a very gracious host. He was easy to communicate with, and left us a nice bottle of wine in addition to a box of coffee pods for their espresso maker. The train was very close as well as several markets and restaurants. If you have plans to stay in Vienna with a large group, this is the place to stay!