There's a branch of the Regional Tourism Office within the massive Conjunto Monumental de Belén complex at Jr. Belén 600 (tel. 076/362-997). It's open Monday through Friday from 8:30am to 1pm and 2:30 to 6:30pm. The office has a handful of photocopied materials and some brochures for sale, including a self-published tourist information guide. There's another small Oficina de Información Turística, associated with the university, at Batán 289 (tel. 076/361-546), which is very helpful and gives out free city maps. It's open Monday through Friday from 8:30am to 1pm.
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.