Location of the apartment is really great. Quiet enough and yet close to the city. Metro station is maybe 100m away from this building which you can reach through corridor inside of the building, you don't need to go outside. You can go and visit every turistic attraction by using U3 metro.
Appartment is clean, bed is very comfortable with amazing view of the city, has a good wifi, your own kitchen (which has everything you need). Overall, apartment is probably bigger than it looks in the pictures.
Next time we're in Vienna, we'll definately come to your apartment again.
Thank you Zuzana. :)