If your budget allows, go to Europe! Florence, Italy is gorgeous as there are many beautiful sceneries there. You could even walk and enjoy the sunset, or even have a delicious dinner together in the streets of Paris!
Maldives, Danang, Bali or krabi if you want a relaxing honeymoon If you’re feeling adventurous, you can try perak as they have alot of water sports there. Mount bromo is nice as well
I would say go to Mauritius, a beautiful place to go. You can book a resort there, rent a car for the number of days you are planning to go and enjoy a luxury honeymoon there.
Vote for Da Nang Viet Nam. Beautiful beaches and delicious local seafood
Beach resorts, more romantic
thailand koh samui or phuket