A perfect experience in every respect! We were initially hesitant to book the apartment because there were no reviews yet but it proved to be a fantastic experience and great value for money. Four of us (two couples) stayed a week in Christian's apartment and never once felt crowded. The apartment is old-fashioned historic Vienna-style with high ceilings and huge, spacious rooms. It's been completely renovated with modern appliances and comfortable beds and other furniture, and everything seemed brand-new. The location on Wiednerhaupstrasse made it easy to get anywhere in the center (by foot or by public transportation, with the 13A bus and many trams running close by). The 4th-district neighborhood is full of interesting shops and restaurants and the Naschmarkt is just ten minutes away. Christian responded instantly and helpfully to all queries and was flexible about our departure time. As he notes in the description, the surrounding building is under renovation but we were never disturbed by any activity and all was peaceful and quiet inside. Those with heavy luggage or difficulty walking should note they'll need to climb a couple of flights of stairs. We enjoyed everything about our stay and hope to book Christian's place the next time we visit Vienna.