Costa del Sol doesn't have a tourism office, but some hotels have English-speaking front-desk staffs, and the tourism office in Puerto La Libertad (Km 34.5 Carretera Literal, 90m/295 ft. from the Shell gas station; tel. 503/2346-1898) can provide basic information. It's open daily 8am to 5pm.
This entire region is sorely lacking in tourist services -- for hospitals, banks, or Internet access, you'll need to journey back to San Salvador or Puerto La Libertad.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.