I had an excellent stay in this place hosted by Eva, Michi and Friends. I chose it mainly for the location, and I didn't regret: great places for breakfast, lunches, dinners and drinks. Although I didn't meet Eva et al, they sent me a detailed list of amenities in the neighbourhood which I found very useful. Also their indications to get to the apartment from the airport were extremely detailed and very handy.
I was a bit afraid that the room would be a bit noisy at night, since the street seemed a bit busy, but that wasn't at all the case since the windows lead to smaller and calmer side-street.
For the rest, I appreciated the clean and ample space, as well as the coffee machine, and the washing machine! which I particularly needed.
In short, I will definitely check for Eva, Michi and Friends' listings on my next trip to Vienna.