The apartment is as described in the advert (actually a lot better in person :) ) very spacious studio flat, the location was within 20-30 minute walk of central Vienna and all the landmarks. We felt very safe walking back late at night and two amazing restaurants were situated just down the road!
Despite being on the ground floor an extremely safe apartment.
Our flight was not until late but the host was happy for us to store the suitcases in a spare room in the building and collect them later in the day :)
Only small issue was some slight delay in response from the host but apart from that, our stay was great :)