We stayed in this apartment as a couple and it was mostly very comfortable. It is well furnished and has a small garden terrace which is good to have dinner or a drink on.
The location is one tram ride from the center and the trams seemed to be constant. The neighborhood is very quiet but well served with supermarkets and restaurants, all within easy walking distance.
The laundry is shared but it did not seem to be much used by others, so availability was good.
One thing to watch out for. The sun rises very early in Vienna in summer and while the Venetian blinds give good privacy, they are not black out. Therefore, if you have trouble sleeping in a light environment, pack a sleeping mask.
Overall, good value for money.