If you want a quiet, relaxing stay then this is the place to choose. For those who will be working at UNO City (Vienna International Centre), you will need to walk about 1.7 km (20 min) as the distances to either the Alte Donau or Kagran stations are about 1 km away so there is little advantage in taking the U-Bahn.
At least in summer the walk is very pleasant and much preferred over the U-Bahn.
I truly enjoyed spending evenings in the garden after a hard work day. The five turtles and the calico cat were fun too.
I met Johann Wagner briefly - a warm and personable guy.