Hello! It's great you're planning a trip to Hanoi, Sapa, and Ninh Binh. Here are some travel tips to assist you.

Best Time to Visit:
The best time to visit Hanoi and Ninh Binh is in the Spring from February to April and in Autumn from October to November, when the weather is pleasant. For Sapa, the best time is between September to November or March to May, when the weather is warm, and you can witness the breathtakingly beautiful terraced rice fields.

Route and Accessibility:
Hanoi, as the capital city of Vietnam, is easily accessible by flights from around the world. From Hanoi, you can then take a train to Sapa, which takes approximately 8 hours. Ninh Binh is around 100 kilometers south of Hanoi and can be reached via a 2-hour drive or train ride.

Accommodation and Booking:
There's a variety of accommodations available in Hanoi, Sapa, and Ninh Binh. It's suggested you book in advance, particularly during peak seasons. Hanoi has a wide range of options from budget hostels to luxury hotels, while in Sapa and Ninh Binh, you can find comfort in eco-lodges, homestays, and hotels.

Clothing and Essentials:
Pack light clothing for Hanoi and Ninh Binh due to their warm climate. However, for Sapa, consider taking warm clothing as temperatures can drop considerably. Essentials include travel documents, camera, toiletries, comfortable footwear for trekking, and a good-quality raincoat if you're traveling during rainy months.

Health and Safety:
Vaccinations for Hepatitis A and B, typhoid, and flu are recommended. Be cautious of tap water and street food hygiene. In Sapa, if you're hiking, ensure you have a knowledgeable local guide and take precautions to avoid slips and falls.

Local Etiquette and Respect:
Vietnamese people greatly appreciate if you make an effort to say a few words in Vietnamse. It's also customary to remove your shoes before entering a Vietnamese home or religious sites. Dress modestly when visiting religious or cultural sites.