Base in Hanoi for the cleanest 5-day fit: two full adventure-heavy day trips, one north-coast nature day, and one final city-and-food day, all while keeping transfers short enough for a ₹60,020 total budget for 2 adults. Buy one Hanoi hotel in the Old Quarter, use trains or shared shuttles only when they preserve a full experience, and skip any south-to-north itinerary because it burns the budget on flights and kills adventure time.