The place: the place was spacious, clean and comfortable for our less than one day visit to Vienna. It was also decked out with IKEA furniture so nothing too fancy. It was more than comfortable enough for our group of 6 to sleep in.
The owner: Olga did not meet us at the apartment and instead her colleague was tasked with meeting us. We waited outside at the address given in the heat for 30min before her college opened the door for us. Olga did not give us any contact information thus resulting in our wait outside. Once inside all was fine and we were given 3 sets of keys (6 keys available for us if we chose).
We mistakenly left 2 sets of keys instead of 3 and I assured Olga I would send the keys once our Europe trip had been completed. Olga sent many messages demanding the keys and threatening to take action if they were not sent even after explaining to her I had just come back from my trip and would send as soon as possible. Her messages were aggressive even after assurances I would send it in the next 72 hours.
Tl;dr place is great, owner is subpar.