A&O Wien Hauptbahnhof

Great location neat main train station

Pros: Great price. I stayed in a hotel room that was very roomy. The rooms aren't cleaned everyday for multi day visits, but I didn't mind. Low price compensates for that. Close to train station and walking the other way your close to the Kepler and reumanplatz pedestrian zones. Great for evening walks. Town center is a couple of subway stops away.

Cons: The night desk clerk on my check in was not friendly. The other staff was fine. I cut him some slack because he is dealing with loud kids all day staying at the hostel. I might be a bit grumpy too in this case.