Kaspar was very helpful from the outset; and always responded quickly to any queries we had. The check in/out process was very straight forward; using the clear instructions from Kaspar. The apartment is in a great location for access to the cities amazing transport system; which will get you to all of this great cities attractions/sites. The apartment is even better in person; a clean, very modern, well designed, and spacious place to stay.
There are some decent local bars which serve great food and beers. And also a good bakery 5mins walk away, with a large supermarket only 10mins walk away.
There is some background noise from the street below and the adjacent u-bahn station; very light sleepers should use earplugs. But this did not adversely affect our stay here at all.
We would definitely like to stay here again, next time we visit Vienna.
Thanks again to Kaspar.