Also part of the slick H10 brand, The One is found in the sought-after modernist district of L’Eixample. With sophisticated styling from award-winning interior designer Jamie Beriestain, the decor soothes in greys and white hues. This posh 89-room hotel boasts cathedral view suites with private hot tub and terraces. Winter travellers can still enjoy a swim in the indoor pool (or rooftop one if feeling brave), while the divine wellness centre attracts many seeking a relaxing Spanish spa break. There are two restaurants and a bar, a well as a host of fantastic eateries and trendy boutiques to be discovered on its refined doorstep.