Considering the Belvedere Apartments in Vienna?
A VT member wrote the following comment about visiting Vienna:
Donauinsel by Zo72
Danube used to have many branches near Vienna in the past causing many floods, which was changed with big regulation project that resulted in creation of Donauinsel, 21 km long and only 200 m wide strip of land, created by digging up a second riverbed for the river. Southern riverbed is wider and it is used by vessels like cruising ships coming from as far as Ukraine, while northern riverbed represents place for relaxation, swimming and skating during the winter.
Northeastern of Donauinsel there is very modern Donaustadt with Vienna International Centre. Donaustadt itself looks like island because it is situated between Danube and the lake which lies in old Danube riverbed. There is interesting park on Donauinsel, too, with tower that hosts rotating restaurant - good for sightseeing.Danauinsel is great place to spend free time in Vienna. It is park with fresh air. Bicycle might be a fine way to explore it.