Our stay at Felix's flat was enjoyable, it is in a great location just off of the main shopping street in Vienna with very accessible access to the underground and other forms of public transportation. The flat itself was in a quiet building - clean and roomy, but it is on the 3rd floor with no elevator and the beds were not the most comfortable for our taste (hard mattresses and very flat pillows). But it was a good value for the money. Felix provided great communication.