My wife and I, along with her two sisters, had a lovely time in Vienna and enjoyed staying in one of Markus Swittalek's apartments. The two bedrooms were ideal, one with two single beds, the other a double. We were delighted to find wine and other goodies in the fridge for our consumption.
The location is ideal, near the canal and just inside District 1 and close to public transportation, the ring road and boat launches. We would definitely recommend this place to other travelers.