Awesome location in the center of Vienna, incredibly beautiful and well appointed apartment. The roof top sitting is particularly nice, though when we were there it was too warm to sit outdoors.
Harry was very kind to let us have the home a couple of hours early as we would otherwise have been stuck. He was also very prompt with responding back with any of the numerous questions we had.
If you stayed in my home you might find several things that need fixing - in the same spirit be aware that the basin in the toilet only has hot water, so you need to wash your hands quickly or you'll scald.
Initially I had thought the cost for this apartment was kind of high. However, after having stayed there, I no longer consider it too expensive for such a great place.
All in all, i have rated this apartment 5 stars in all categories only because that was the max rating. It deserves more.