I had a wonderful stay in Armin's apartment last weekend.
The apartment is very clean, tidy & stylish- the photos tell the truth! I woke every morning with a Nespresso coffee and had a relaxing & hot bubble bath one night too.
The location is quiet and only a short walk from the U-bahn to the Inner Stadt, and also easily reached from the airport bus.
Armin is an easy host, I booked last minute (the night before) and then had lots of problems with flight delays etc but he made sure I got the keys and the house was ready for my arrival. He is friendly and helpful with directions and tips- in both English and German.
I would recommend this apartment to any friends travelling to Vienna.