Excellent apartment, about 3 minutes walk from U-Bahn station.
It's quite spacious even though it's only 2 rooms.
Note that you have to climb the stairs all the way to the top of the building to get the keys for the apartment, and only then you can use the elevator using a chip. The host didn't tell us that, so our check-in process involved me changing my shirt to a non-sweaty one (it's really a lot of stairs, and Vienna went through a really hot day).
Some stuff was missing as well: soap dispenser but no soap, paper towel dispenser but no paper towels, wonderful oven but no oven-mitts. Also, the host doesn't respond on Airbnb or on WhatsApp, so for any request we would have had to use our limited cellular package.