What are the visa & residency requirements in Da Nang?

"In order to visit Da Nang, visitors must obtain a visa prior to their arrival. The process of applying for a visa involves submitting an application form, passport-sized photographs, and a valid passport to the Vietnamese Embassy or Consulate in the visitor's home country. Depending on the type of visa, additional documents may be required. In order to obtain residency in Da Nang, Vietnam, applicants must submit an application form, passport-sized photographs, and a valid passport to the local Immigration Office. Additional documents may be required, such as proof of employment, proof of financial stability, and a criminal background check. Once the application is approved, the applicant will be issued a residency permit," mentioned another expat when asked about moving to Da Nang, Vietnam.