What are the visa & residency requirements in San Salvador?

"In order to visit San Salvador, visitors must obtain a visa prior to their arrival. The process of applying for a visa involves submitting an application form, a valid passport, a passport-sized photograph, and a fee. Depending on the type of visa, additional documents may be required. In order to obtain residency in San Salvador, El Salvador, applicants must submit an application form, a valid passport, a passport-sized photograph, and a fee. Additionally, applicants must provide proof of employment, proof of financial stability, and proof of health insurance. Once the application is approved, applicants must attend an interview with the immigration authorities. After the interview, applicants will receive a residency card, which must be renewed every two years," remarked another expat in San Salvador, El Salvador.