Straight off the bat, I have to say that this is arguably the best place I've ever stayed at using Airbnb. The flat is so stylishly done and inviting to live in. It genuinely felt like we had our own amazing, private flat in the heart of Vienna (and there's a classical guitar just lying around!). The location is also terrific. On the underground, you're 3 stops away from Stephensplatz which is the heart of the old town of Vienna. You're also 4 stops away from Westbahnof and Vienna Hbf which is ideal if you're travelling to/from Salzburg for example. Max, as a host, was exceptionally warm and welcoming. He and Robert were always accessible and made us feel at home. If this place is on the upper limit of your budget and you're in two minds, I would strongly recommend going ahead and booking.