The apartment is clean and spacious with everything you may need. Brigitte is a great host as she was always available for communication, provided advice, and was very welcoming. For example, she had two baby cots at this apartment for our kids, was flexible with the check out time, and gave us a children book she has authored.
The location is also good - a walking distance from Belvedere and a few stops by tram from city center and Opera. The house is quiet enough and is located in a quiet residential area.
All in all, highly recommended!