Opened in 2012, and already one of the top hotel showstoppers in town, the Topazz should win every design award in the book: it's an extraordinary homage to the Wiener Werkstätte style that took Vienna by storm in the early 1900s. Just imagine a cylindrical silver vase gemmed with big oval amber stones by Wiener Werkstätte design legend Koloman Moser—but ramped up to the size of a nine-story building: that's a possible first impression thanks to the façade, which is strikingly covered in giant oval windows. Using the Jugendstil style, Josef Hoffmann and Dagobert Peche—two other leaders of the Wiener Werkstätte—favored geometric decoration over the sinuous curves of French Art Nouveau, and the results are on full show in the lobby and breakfast lounge: with their suave slipper chairs and custom-made fauteuils in lavenders and off-whites, these spaces recall Vienna's bygone "salon culture." Guest rooms are the height of sophistication: cool and plushless, with mahogany paneling, steely gray furnishings, and thoroughly 21st century creature comforts. Literati and designers love this hotel; if you find it's full, head across the street to its larger sister hotel, the Lamée.