Location was ideal for us. It's just 1 ubahn stop or 10 mins walk away from stephanplatz. Apartment near to swedenplatz ubahn station which is on the red ubahn line and a couple of stops straight from the central train station thus no need for transfer. Host provided pre check in information and check us in on the day itself. Return of the key was a breeze too. Apartment has pretty much everything we need to provide a home for us during our few days stay in Vienna.