Very simple check-in and check-out procedures ; the apartment is very clean, the bedding is comfortable, it seems overall prepared so the guests can have the minimum to have a great stay ! It's also close to a subway station, and quite close to the historical center, which makes it a perfect accomodation for tourists that want to spend a few days in Vienna.
The only flaw would maybe be the broken shower door, but it's no big deal :)