With just one bedroom, The Napoleon is London’s smallest boutique hotel. Three of its four floors are given over to distinctly different bars: ace whisky lounge Black Rock, Spanish bodega Sack, and this one. The Devil’s Darling was a nickname for Napoléon, a mural of whose coronation dominates the 1930s-inspired bar. The Gallic theme continues with frou-frou swagged drapes, white napery on tables-à-deux in serried ranks, and clichéd Belle Epoque posters. Incongruously, discs by The Police and Spandau Ballet spin on a 1970s record player. Nevertheless, the cocktails are a triumph. Changed daily, the menu lists just three perfectly mixed drinks: Josephine Baker, an inspired brandy, apricot and port-based 1930s revival; Ideal Cocktail (a Tanqueray 10 gin, grapefruit and maraschino Martini) and a gratifying Roe & Co Irish whiskey Highball. This bar might become our darling if its owners, Worship Street Whistling Shop, grasp that the devil is in the detail.