For a foriegner in Vietnam, every day is a holiday. Lovely people, cheap living, delicious food, super cheap draft beer (bia hoi), blow you away coffee, fresh seafood, good tailors and seamstresses for when you need new clothes, cheap flights to SE Asian countries, good beaches.
Suicidal drivers, low quality health services outside major cities, corruption, huge pollution problems in Saigon and Hanoi, astronomical international school fees.