Project Sinatra consists of seven apartments in the heart of Mayfair, designed by 1508 London. This Grade II listed Georgian property had been converted into offices, its original internal features having been stripped out in the process. 1508 London’s brief was to transform the space into contemporary family residences, while respecting the classical language and details of the building’s heritage. A ground-floor four-bedroom duplex is the largest apartment and includes an impressive marble and walnut staircase, demonstrating how modern elements can be sympathetically added to a classical building. Exquisite furniture was sourced from designers including Bolier, Porta Romana and Donghia, and cleverly concealed oak shelving sits behind the wall panelling, creating a visually appealing contrast when opened.