It’s not in the most city center, but it was perfect for us since I went daily to the Austria Center (less than 30 min walking/20 min with subway) for a congress and my family found a playing area for kids near by, a lot of food shops and restaurants. Walking distans to the amusement park. The ’Handelskai’ road is quite busy though.
The apartment has two bedrooms, one with a 180 cm and the other with a 160 cm bed. It was quite simple, but clean. Got all the basic stuff you need for a short stay.