Sure! Rouen, Giverny, and Les Andelys are beautiful places in the Normandy region of France, each with its own charm. Here are some travel tips:

Best Time to Visit:
The best time to visit these places is from April to October when the weather is pleasant. Giverny, which is known for Monet's gardens, is especially beautiful during spring and early summer when the flowers are in full bloom.

Route and Accessibility:
Rouen is easily accessible by train from Paris, and so is Vernon, which is the closest train station to Giverny. From Vernon, you can take a short bus ride to Giverny. As for Les Andelys, it's best to rent a car as public transport options are limited.

Altitude and Acclimatization:
These areas are not at a high altitude, so acclimatization is not an issue.

Accommodation and Booking:
Booking in advance is always a good idea, especially during peak season. There are a variety of accommodations available, from hotels to charming bed and breakfasts.

Clothing and Essentials:
Expect rain throughout the year in Normandy, so pack a lightweight raincoat or umbrella. Comfortable walking shoes are a must, as you'll be doing a lot of exploring. Don't forget to pack a camera—there's lots to photograph!

Health and Safety:
No specific health or safety issues to be particularly concerned about, but having travel insurance is always recommended.

Local Etiquette and Respect:
French people appreciate when visitors make an effort to speak their language, even just basic greetings, please and thank you. When visiting any churches or cathedrals, remember to dress modestly and speak quietly as respect to those who may be worshipping.