This is one of the best Airbnb places we have stayed at. Karl was very responsive, and in typical Austrian style, was very organized and explicit. He has an information book, in several different languages, explaining everything from the washing machine to the remote control (much welcomed). He also provided detailed information on local restaurants, transportation and even info on what to do in an emergency. The keyless entry relieves the need to worry about keys, it was really easy to get in and out. And the location was perfect, close to a Spar grocery store, lots of restaurants, and a short walk to the underground. The high ceilings, spotless interior and bountiful amenities (did I mention the washing machine) makes this the perfect base for your stay in Vienna. If (when) we come back, we're staying at Karl's place! (Secret spot: check out the plack on the wall commemorating Kolo Moser, a famous Austrian artist. Turn right out of the apartment, go down about three buildings and look up!)