Stefan's place was everýthing we hoped for. The location is amazing and super close to 2 different subway lines and I don't know how many trams and busses. But mainly it is very walkable and charming. We spent 5 days in Vienna and had breakfast within a 10 minute strolling radius at different cafe every day. The Hofburg, the opera, the Naschmarkt and a plethora of shops are near by. The Museumsquartier right across the street has a bunch of funky modern art museums and puts on free open air concerts etc in its court yard. We also found lots of different breweries and gigantic schnitzels within a 15 minute walk.
When at the apartment we enjoyed all described amenities plus a thoughtful welcome gift from Stefan. The little studio itself is clean, new and stylish and the bed is very comfortable. We loved our stay and can't recommend it enough.