Once popular with vacationing Americans, this novel spa is just outside Mayajigua in northern Sancti Spíritus Province. The tiny rooms are set in a variety of two-story villas, nestled beside a small palm-fringed lake with pedal boats and two resident flamingos. It's famous for its thermal waters (32°C), first used by injured slaves in the 19th century, now for holidaying Cubans.
The 67 rooms are no-frills, but the setting, wedged between the Sierra de Jatibonico and Parque Nacional Caguanes, is magnificent and makes a good base for some of Cuba's lesser-known excursions. There's a restaurant and snack bar on-site.