The apartment looks exactly like on the pictures. We haven't met Sarit and Gabriel in person, but the check-in was very smooth and the communication was perfect and very clear. They also gave us good recommendations for breakfast.
The U-Bahn is a 1min walk and it takes you to the city very quickly. We also had fun on the Donauinsel with the kids that is a few minutes walk. The house itself is a bit old, but all together it's a great value for money and I would absolutely recommend.