Markus's apartment was perfect for our stay in Vienna! It was very clean and comfortable, and in a fantastic location from which to explore the city - close to the U-Bahn, walking distance to things like the Naschmarkt and the Secession Building etc.
Markus himself was a fabulous host - communication was great throughout, the check in process was nice and simple, he made some great recommendations and left some nice little touches in the flat (a cold beer in the fridge after travelling was very welcome indeed!), and he was also very polite about my German skills :)
Vielen Dank, Markus!