In Vienna, housing is a destination. More specifically, the Hundertwasser House is a tourist destination. This housing complex was completed in 1985. While it is a tiny bit out of the downtown core, visitors still flock in large numbers to see it. Further details on this housing complex can be found on the Vienna info website:
https://www.wien.info/en/sightseeing/sights/hundertwasser-house-vienna (Kegelgasse 37-39, 1030 Wien)
Vienna has often been ranked as the most liveable City in the world. There is a significant stock of affordable rental units in Vienna. Below are recent photos of Hundertwasser House.
How Vienna ensures affordable housing for all with an extremely complicated housing system (July 9, 2017, Milwaukee Community Land Trust)