Well-appointed, spacious, clean apartment quite close to Karlsplatz. I ended up walking to a lot of places instead of taking the metro (U-bahn), including Stephansplatz, the Museum Quarter, Naschmarkt, Belvedere Palace, and Vienna Central Train Station (Wien Hauptbahnhof). Having said that, I don’t mind walking longer distances - not to worry, the apartment is a very short walk to Taubstummengasse station and from there you can connect to anywhere in. Vienna. Multiple grocery stores nearby. Highly recommended. Self check-in was a breeze, just remember to write down the instructions, including your apartment number, so you don’t accidentally take the wrong key from the lockbox!