We would like to inform there is NO Embassy of Iceland in Da Nang City, Vietnam.
The process of applying Vietnam e-visa is so easy for Icelandic passport holders. As mentioned, it is the easiest type of Vietnam visa to apply.
Just like with applying for a visa for other countries, your passport is the most important requirement for your Vietnam e-visa application. It should have a validity of 6 months from your date of entry to the country.
The Vietnam e-visa is one of the latest types of visas that the Vietnam government issues to citizens of more than 80 countries. This is a single-entry visa that will allow travelers to stay in the country for a maximum of 30 days.