My story for Telegraph Travel on Cuba reopening to international tourism. Havana, and the provinces of Sancti Spíritus and Ciego de Avila remain off limits. Charters can still fly direct to Cayo Coco for the resorts of Cayo Coco and Cayo Guillermo:
https://www.telegraph.co.uk/travel/destinations/caribbean/cuba/articles/cuba-full-reopening-tourism/