Fraser Bond are the leading lettings and property management agents for Biltmore Mayfair - London W1K. Biltmore Mayfair is a five-star deluxe hotel at 44 Grosvenor Square in Mayfair, London W1. 257 luxurious guest rooms and 51 designer suites officially opened in September 2019. Managed by Hilton under its LXR Hotels & Resorts brand. History 2019 Spring - The Biltmore Mayfair - LXR Hotels & Resorts opens. The building has undergone a multimillion-pound redevelopment following its closure in early July 2018. Designed by Goddard Littlefair, the hotel offers 257 luxuriously appointed guest rooms,.