'Lean luxury' is the ethos of this slick boutique hotel occupying the Sofiensäle, a grand former concert hall. Interiors are minimal-stylish, the vibe laid-back, and the pared-down rooms with oak floors have vintage furnishings, docking stations, in-room tablets and rain showers. There's also a library, a bar that loans out a guitar, a yoga terrace and bike rental (€10 per day).
Breakfast is worth the extra €16, placing the accent on regional and organic, with fresh fruits, breads, Viennese coffee and superfoods.