The apartment is on the top floor of a beautiful building in the Margarita district of Vienna; this is maybe about 20 minutes walk from the city centre or a couple of stops on the underground. The place itself is really cool, and I don't think the photos really do it justice! While the single room is fairly small, space is used really well so it never feels cramped, and the massive windows make it feel really light and airy.
While we never met Andrei in person, we communicated a lot through text and both he and his wife Samina were really friendly and helpful throughout.
Overall, we had a great stay and would definitely recommend this place to any couples wanting to explore Vienna!