Campo Florido, a half hour's drive east of Havana. Viva la playa!
If you want to make me happy, just take me to a tropical beach, toss me into the ocean and let me bob in the waves for a couple hours.
Then, as the sun drops low, I'll pad up and down the velvet sand, collecting shells and bits of coral.
I cannot think of a finer way to spend an evening in Cuba. And I'd do it again in a heartbeat.