I have lived in this part of town for many years and have stayed in about a dozen airbnb places nearby since moving away. It's a great part of town to stay in. The apartment itself is quite nice, if you don't mind a few things (I didn't) - it's on the fourth floor without elevator; it gets very hot in summer during the day; you can hear the streetcar a little from 5am till after midnight through closed windows. It's nicely arranged like many similar old apartments in Vienna, cleanly renovated, in a beautiful old building, equipped with Ikea furniture and accessories throughout, with a rather new very small kitchen with a few basics. This is not a personal place to stay, but it's quite nice, a solid choice.

I suggest to improve a few things. On arrival, I noticed that the duvet cover was missing from the bed. When contacting the host, she explained that she hadn't been in the city for 8 weeks and was relying on her cleaning lady to run the shop, but that she had just gotten a new one whom she claimed didn't know anything, and whom she didn't seem to trust to get things right. She explained to me on the phone how I could get a specific key from the safety box in the house to open a locker in the apartment with bedsheets. I didn't mind much going up and down the stairs, but unfortunately, no duvet cover was to be found. There was a leftover laundry item in the washing machine and the fact that I had to provide my own toilet paper. The wifi had initial issues, which the host knows of but has not addressed. It worked well enough later. I didn't mind these details much.
I left the apartment in clean state, just not very tidy due to an early flight - meaning, I did not put out the garbage, as I often do. A cleaning fee is included in the booking costs. I broke a 2-euro ikea cup and left a message about it with an apology.

I would consider returning soon on my next trip, were it not for the very odd exchange I had afterwards with the host.

Two days after leaving, I received a message from the host claiming that the apartment was "totally dirty" and that the cleaning lady needed 4 hours to clean it (the same cleaning lady, I assume, whom she claimed earlier to not trust to get things right). She then requested an additional payment, to be mailed to her in cash. She added that the apartment was overly cheap, which I disagree with. In my response, I explained my perspective and rejected the idea that extra payment would be needed. I know that the apartment was fine.
I'd think that this was mostly a misunderstanding, but it would have been nice to resolve this somewhat friendlier.