We had a great stay at Eva and Michi's. Great location, close to subway, bikeshare, and walkable to much of Vienna's sights. Eva and Michi are super nice and live in the building so were very accessible and helpful during our stay. The thoughtful personal touches were nice. And a particular plus: the room has a mobile wifi hotspot that they let you carry with you, so you can have wifi throughout the city. All in all a great stay - we would recommend it.