You will not be disappointed if you choose to stay at Ysabel's apartment. It's extremely spacious. We had plenty of room for my husband and I, our two daughters and my parents. It was easy to communicate with Ysabel and she always responded very quickly. The location is great as well. You're not in the middle of the city but you're just on the other side of the ring road in the museum quarter. It's very easy walking into the city and we never once felt that we were too far from anything. We wouldn't hesitate staying here if we go back to Vienna!