The pictures looked nicer than the reality but thats to be expected.
The whole building is a fully automated AirbnB operation. Every flat of the building has been seemingly adapted to be rented out automatically. The whole communication runs via automated text messages. No Human interaction needed.
It honestly gave me a vibe of the "No-tell Motel" in Cyberpunk 2077. It is a very anonymous place and it has the charm of an excel table. But this can be a good thing if people are searching for this kind of anonymity.
A politically problematic thing is that these flats obivoulsy have been removed from the renting-market in Vienna because the investors can make more revenue with AirBnB than with rents.
This is understandable from a capitalist viewpoint since renting these flats wont give the 5% yield on the capital many investors expect. It is really a perfect storm of low interest rates and high uncertainty. Paradoxically this will probably utlimatetly heaten up the inflation due to the scarcity of flats on the renting market and at some point rise interest rates again. Until then Vienna is missing another building with potentially cheap flats.
If you do not like this the place is not for you.
If you are searching for a very uncomplicated check in- and out procedure which is fully automated, a mostly clean and anonymous place (the toilet wasn't cleaned well) you've found the right offer. The location is okay because it is reasonably central and has good public transport options but it is also VERY loud because it is directly next to one of the major streets in Vienna. Open windows aren't really an option if you are noise-sensitive.
Overall I can recommend the place but it also left me with a bitter aftertaste.