Florian's apartment was an excellent place to stay during my first visit to Vienna. If if come back to Vienna, I will stay here again. It is a beautiful apartment, well-positioned near the Rathaus. You can see pretty much all of Vienna by foot from the apartment.
The bedroom is perfectly quiet (silent, actually) with plenty of room for two people. The bathroom is modern and immaculate.
Flo was a great host. We went to a local bar one night and chatted about culture and world affairs. He's smart, laid back, and speaks excellent English.
I highly recommend the place.