A friend and I visited Vienna for three nights in August. The apartment was even nicer than we expected: spacious, perfectly clean and with everything we needed.
Bedroom: nice comfortable bed
Living room: clean, with a dining table and sofas
Kitchen: well equipped (except coffee machine), washing machine, dryer and dishwasher are available.
Bathroom: spacious and very comfortable, big mirrors, nice relaxing tub.
Location is close to lots of cultural activities, restaurants, bars and shops.
Hans was accomodating with our early check-in, although we did have some issues communicating at the time of arrival.
All in all, I think the apartment is really good value for money, and would certainly have it on the top of my list for Vienna.