This was the perfect place. It's located right on the edge of Leopoldstadt and Innerstadt which meant no more than a 10-minute walk to see numerous parts of the city. The cafes around the flat are great as well.
The unit was much bigger than we expected and it had everything we needed. Chawa always responded to queries in 5 to 10 minutes which made checking in and out a seamless experience. I would highly recommend this location and will be staying here again on my next trip to Vienna.