It was a perfect choice to stay in Sabrina's apartment at the beginning of August. The apartment is located in central Vienna. If you do not want to walk (and you do not have a scooter) you can reach all Vienna attractions either by tram (the tramway stop is just at the entrance to the apartment house) or by tube (several hundred meters from the house) or by both.
The apartment is inside of the house which for me has many advantages. It was absolutely quiet - no traffic noise and the sun does not shine in none of the windows. It is a huge advantage when you have +35 centigrades outside. Although there is no air conditioning the temperature inside is always moderate and the air is fresh, so you can really have a rest after visiting Vienna during a hot period of time.
One tip. Now, there are parking time limits in Vienna - a max of 2h are permitted on the streets. So if you happen to come to Vienna by car I recommend you to leave the car in one P+R garage. The fee is low - max. 5 euros a day. In this way, you will not have to think about your car.
The appartment description on Abnb is fully correct.