Parador Baños de Coamo (end of Carr. 546, 787/825-2186, fax 787/825-4739, hbcoamo [at] coqui [dot] net, $87 s, $93 d, plus tax) has 46 very basic motel-style rooms on two levels, each with a private balcony. Rooms come with air-conditioning and cable TV and feature stone tile floors, worn furnishings, and institutional-looking bathrooms. But the thick, wild vegetation growing around the property creates a pleasant natural environment. At the center of the complex is a massive, reputedly 500-year-old saman tree covered in vines and cactus that shades the entire property. There are two pools, one for swimming adjoined by a bar, and the other containing water from the hot springs.
Aguas Termales (Hotel Banos de Coamo [1], end of Carr. 546, 787/825-2186 or 787/825-2239, daily 7–10 a.m., noon–3 p.m., and 5:30–9:30 p.m., $7.50–19) serves Puerto Rican cuisine, seafood, and steak.
At the Coamo Springs Golf Club & Resort is the Coamo Springs Restaurant (Carr. 153, km 1.5, 787/825-1370, www.coamosprings.com [2], Thurs. and Sun. noon–9 p.m., Fri.–Sat. 11:30 a.m.–10 p.m., $11–28) is the nicest restaurant in town, serving Puerto Rican cuisine, paella, and churrasco.
Links:
[1] http://www.moon.com/destinations/puerto-rico/south-coast/coamo
[2] http://www.coamosprings.com