We stayed here as a family group of 5 for one week. We found the property to be accurately described, very clean, and with all the facilities working. The beds were comfortable.
This is a spacious top-floor apartment with four well proportioned bedrooms, two nice bath/shower rooms, and a large open-plan lounge/dining area and adjacent kitchen ( which make up a sociable space). All the rooms are on the same level, except for a small study area and the terrace which is upstairs.
It has a central light well and rooflights, but only a few windows. So, whilst there is plenty of natural light, external views are limited.
The kitchen is well equipped (with utensils, pans etc), so that cooking for a group or family is perfectly possible.
As this is an apartment in a large city, so if the weather is warm and you need to leave windows open at night for ventilation you will get some traffic noise, although no more that is to be expected given its position. The building itself was very quiet, with almost no noise from other occupants.
Getting to/from the airport is straightforward using the CAT train and a modest walk from Wien Mitte station. The city centre is within reasonable walking distance, and there are local underground and overground stations for travelling further afield.
In summary, this was a great base for our extended family group vacation to visit Vienna. One of the best Airbnb's we've stayed in. Highly recommended.