The apartment is in a very good location, about 8 mins walking distance from the underground. With metros running every 3-5 mins, it's trivial to access any part of Vienna fast.
A huge mall is also about 10 mins out so you can get anything you'd need, restaurants included (mind you, every shop closes at 5-6 in Austria and only restaurants operate on Sunday).
Wrt the apartment itself, it's a cozy place with everything you'd need for your stay, including a well equipped kitchen and lots of coffee :D
Would definitely pick again.