Gran Hotel Manzana Kempinski La Habana is, alone, a reason to head to Cuba, as quickly as you can. Many of those staying at this 246-room beauty seem to congregate on the sixth-floor rooftop, for its outdoor pool – see above – and, in all directions, strategic views of the city.  Also up there is the Albear by Resense spa, named for engineer Francisco de Albear, 1816-1887, whose main lasting claim to fame was installing a system to bring in water from the Vento springs via what is still known as the Albear aqueduct.