Great communication, Mary is very helpful. Easy check-in and flexible check-out. Appartment is 3 minutes easy walk from U6 Niederhofstrasse station, and also 3 minutes from U4 & U6 Langenfeldgasse station, which makes it a great location with easy access to every part of the city. Fast food stores, Billa, Hofer, cafe... everything is within 200-300 meters.
Appartment and appliances are not brand new, but it's quite cozy and has that home-like feeling. It doesn't have a TV, but you're not going to need one in Vienna. Loved the bath tub.
Great cost/value ratio