"Hotel Costes is (if you ask us) the most seductive, decadent place to sleep in Paris, and its newly-opened sibling in London, L’oscar, is no different. It’s all excess. L’oscar is a former Baptist church that hotelier Jacques Garcia stuffed with his signature red velvet everything, Lalique butterfly taps in the bathrooms, and chandeliers aplenty. Guest rooms come with yoga mats, incredible city views, and beautiful mosaic showers. But we especially love the bar, which is swathed in plush navy velvet, wood-paneled walls, and impressively stacked bookshelves."