Overall the apartment is good for a short-term stay and if you just need a place to crash.
Don't expect to do much cooking, as there's no ventilation for cooking and only 2 old cooking hobs. Also be mindful that there's no washing machine - the listing is accurate, but we just didn't pay close enough attention to these details.
We're digital nomads who work while traveling - and the apartment wasn't good enough for that. The internet connection also was flaky at times. Not bad, but not great either.
The bed was comfy, neighborhood was quiet, there are 2 AC units (godsend in 30C breeze-less Vienna), so if you need just a place to sleep in Vienna - this apartment is great for that!