Really great stay at Superbude, the decor is really fun and the hotel has all the services you could need including free, fast wifi. Neni, the restaurant on the roof provides great views over Prater for drinks and breakfast. Our room didn't have a direct view of Prater, but this wasn't a problem for us, you could definitely hear the park with the window open, but it was fine once the window is closed.
The shower leaked water onto the bathroom floor which seemed to be down to a design flaw which was a tiny annoyance but it was not enough to impact our stay.