Nikolaus's apartment was outstanding in every way. It was clean, very spacious and my family and I felt comfortable being there. The location was great with many restaurants, shopping and sight-seeing in every direction. Having two bathrooms, three bedrooms and a full size kitchen was a huge plus for us since we were traveling as a family. We cooked dinner several nights there and had plenty of space and all of the necessary cooking equipment.
Nikolaus was also a great host, was very responsive and welcoming to us and allowed us to check in an hour early, which was most appreciated.
We loved staying at his apartment and made our visit to Vienna a wonderful experience.