Great trip to Vienna. Travelled to Vienna with my wife and her parents for a long weekend, and we stayed at Das Capri. It is a really nice hotel and definitely on par with several four star hotels we have stayed at. The rooms are very nice and spacious, and breakfast really good (it does get busy and slightly packed from 8.00-9.30). The only negative, was a slightly unpleasant smell in our end of the floor (4th), which we couldn't figure out where came from. Location is good too, with a metro line right outside the door, and you are walking distance from both Prater and the city center. Staff are very nice and helpful.