I would not recommend staying at this flat. I have rented many flats throughout Vienna using Airbnb and this one is by far the worst I've been to. The beds are extremely uncomfortable (no double but two singles, always falling between the two during sleep, mattresses are very bad). The flat is directly in front of train tracks and a very busy road, so it is very noisy, and early on in the morning. There were no basics for the kitchen such as oil, salt, pepper, sugar, coffee, etc. and no soap for the washer, which makes the kitchen and washer basically useless unless you buy everything new and leave it behind. Finally, we were asked for extra documents (COVID certificates) to get the check-in information, which is not required neither by Airbnb or the Austrian/Viennese government. (Also, if you lock yourself out, they will charge you 35 euros to come and open your door).
Rent something else.