Hello! It's exciting to hear that you're planning a trip to Huế, Da Nang, and Hoi An in Vietnam. These are fascinating locations rich with history and culture. Here are your travel tips:

Best Time to Visit:
The best time to visit these cities is from February to April, when the weather is more mild and pleasant. During this season, you can enjoy exploring without the harshness of the summer heat or the chill of winter.

Route and Accessibility:
Both international and domestic flights are catered by Da Nang International Airport and Phu Bai International Airport in Huế. From either airport, you can take a taxi or take a shuttle bus to reach the city centers. Another popular way to travel between these three cities is by train, which offers scenic views of the Vietnamese coastline.

Accommodation and Booking:
It's advisable to book your hotels in advance, especially during the peak tourist season. There's a wide range of accommodations available in all three locations ranging from budget homestays to luxury resorts. Online platforms like Booking.com or Agoda can be used for bookings.

Clothing and Essentials:
Pack light clothes suitable for tropical weather. Don't forget your swimsuit, sunscreen, mosquito repellent and a good pair of comfortable shoes for walking. A light rain jacket might be useful as brief rain showers can occur unexpectedly.

Health and Safety:
Food safety can be a concern in Vietnam, so only eat at reputable places. Ensure your routine vaccines are up to date. Rehydrate often due to the humidity. Be extra careful when crossing the roads as traffic can be chaotic.

Local Etiquette and Respect:
Vietnamese people are generally polite and conservative. Dress modestly especially when visiting temples. Tipping is not compulsory in Vietnam, but it is highly appreciated.