We stayed at Illia's place for 2 days with 2 young kids. The place was squeaky clean and looked exactly like the photos in the listing. Illia was always friendly and prompt in his communication. He even accommodated our request to check-in a little early.
The location is also really great, a short drive to all the main attractions and we had no problems finding on-street parking at any time. If we're ever in Vienna again, we'd definitely prefer this apartment! Highly recommended!