We would like to inform there is NO Embassy of Sao Tome and Principe in Da Nang City, also, there is NO Embassy of Sao Tome and Principe in Hanoi capital city of Vietnam.
There is NO embassy or consulate of Vietnam representing in Sao Tome and Principe 🇸🇹. Options for citizens of Sao Tome and Principe getting a visa for Vietnam: Visa On Arrival – Apply online for pre-approval then pick up your visa on arrival at the airport.