I was welcomed by Francine, she was very nice and easy to reach. She helped us with some practical stuff (we arrived early in the morning and she suggested to store the luggage at the Westbahnhof, which was a 10 min walk from the appartement). She also had some good suggestions what to do in the area.
The location is great, nearby the shopping centre and metro station. Also nearby one of the parking for the bike rental (try Wien Bike!). The room was spacious en we could use everything we needed. Definately recommend this place for a stay in Vienna!