Housed in a former office block built by architect Georg Lippert in 1962, the Hotel Daniel is the third addition to the eye-catching Weitzer boutique hotels. Designed by Vienna-based architecture firm Atelier Heiss, the listed building is Austria's first to feature a curtain wall façade. Guests enter into an inviting open space known as Bakery, which incorporates a lobby, bakery, café and lounge area in one. The space is filled with vintage furniture from the 1960s, mixed with wood palettes used as coffee tables. The 115 minimalist rooms, decorated in shades of grey and white, with concrete ceilings, offer fabulous views across Vienna. The hotel doesn't come with lots of bells and whistles. Don't expect a mini bar or even good cupboard space. But you will like the rooms, as long you travel light, and there are little extras like hammocks, ideal for relaxing in before a night out, and Vespa scooters and bikes to hire, for exploring the city.