Do you want a big city? You mention Bangkok, Ho Chi Minh, Singapore. But if you like Vietnam and can have a smaller city, and dislike motorcycles, try Hoi An.

Do you want a big city? You mention Bangkok, Ho Chi Minh, Singapore. But if you like Vietnam and can have a smaller city, and dislike motorcycles, try Hoi An. It is beautiful, far fewer motorbikes especially on the outskirts (you can cycle on a bike!), and close to Da Nang if you want a semi-large city (a million people.)