This is a very nice place to stay. Very central with almost everything in walking distance. I've parked my car at the parking indicated in the house guide for 7 euro per day (witch is a Vienna guide as well) and did not need to use it for the 2 days of my stay.
The flat is well stuffed with a functional kitchen, nice furniture picked with taste and was clean at our arrival. I highly recommend this place to stay in Vienna.