For about three centuries Hoi An was one of the busiest ports in Southeast Asia, a place where Japanese, Chinese and Vietnamese merchants lived side by side and ships waited for the monsoon to turn. The Ancient Town is what the port left behind: low tiled shophouses, Chinese assembly halls, a covered bridge and a river that used to carry all of it. It has been on the UNESCO World Heritage list since 1999, and since 2025 it has been a ward of Da Nang city, so addresses now read Da Nang.
It is also the most tourist-ready town in Vietnam, and it knows it. The center is crowded from late afternoon, tailors call out from every doorway, and the river fills with boats selling lantern rides. You can still get under it. Five days is the right length because the real Hoi An sits just outside the old streets: rice fields and a vegetable village on bicycle, a long beach, a coconut forest, the Cham ruins at My Son and the big city of Da Nang an hour away. It also gives a tailor time to measure, fit and finish a garment properly, which one day never does.
The plan runs day by day. Day one is the Ancient Town, day two rice fields, the beach and a full-moon lantern night, day three My Son at dawn and the quiet villages, day four Da Nang, and day five the coconut forest, final fittings and a slow last evening. Start on a Wednesday: in January 2027 that puts the monthly lantern night (21 January) on day two and the Dragon Bridge fire show on a Saturday for day four. Hoi An is the perfect middle of Vietnam, and the old imperial city of Hue is the natural next stop, covered in 3 Days in Hue.