There is NO Consulate of Bulgaria in Da Nang City, Vietnam.
Do you want to find the Embassy of Bulgaria in Hanoi instead ?
The best thing about e-Visa is that it doesn’t require you to submit too many paperwork and documents. Unlike the Vietnam Visa on Arrival, there’s no longer a need to bring photos on your trip.
Citizens of Bulgaria can use the Vietnam electronic visa to enter Vietnam. Once in the country, they can stay for a maximum of 30 days.
The Vietnam E-visa, or Electronic Visa, is a type of visa that must be applied online. For this visa option, you just need to fill out a form online.