Even some of the heaviest hitters in business have side hustles. Take Leonardo Ferragamo, president of his family’s publicly traded fashion and accessories house, who oversees a nice line in hotels. His Lungarno Collection includes some of urban Italy’s best, with three boutique properties in Florence; two more exclusive propositions, supra-branded the Portrait Collection, operate there and in Rome. On 1 December, he’ll open Portrait Milano, his largest and most ambitious project to date, as much an urban-regeneration initiative as it is a luxury hotel.