"Located in Mayfair, this 181-room, nine-story property opened as the brand’s UK and European flagship and bills itself as London’s first sustainable luxury hotel, with sustainably sourced and recycled materials used throughout. The neutral, homey design emphasizes nature — living moss walls, timber flooring made from fallen Windsor Estate trees, more than 200 plant species, cozy throws and wood accents — and site-specific details (a leafy chandelier referencing Green Park picnic baskets and a reception desk carved from a single Sussex timber) tie the interiors to the city. Dining is a highlight: a ground-floor restaurant led by two-Michelin-star Chef Tom Sellers focuses on seasonal, local produce with a dedicated raw bar, expansive wine program and a tableside Knickerbocker Glory troller for customizable sundaes; additional outlets include a daytime-to-evening Neighbours Cafe & Bar and Dover Yard, a fireplace-lined bar overlooking a botanical courtyard. Onsite wellness and convenience features include a Bamford Wellness Spa using local products, a full gym, in-room tap water system and a complimentary house car, and the location is steps from Green Park and Piccadilly Circus and within easy walking distance of major attractions like the National Gallery, Westminster and Bond Street; rooms comprise 137 uniquely designed rooms and 44 suites, with rates starting around £500/night."