A wonderful little hideaway, nicely furnished with a great piano, kitchen and internet to keep you occupied. If you're out and about there's a supermarket close by (closed on Sundays!) and the metro station is about 9 minutes walk, and will get you quickly and cheaply anywhere you need to go in Vienna.
Very easy check-in process, and Armin was always quick and friendly to respond to my queries, and made me feel very welcome in his home.
Am happy to recommend!