If you want to explore beach side, then Seychelles should be your post. you can check my honeymoon trip posted on my profile for the same as it is less crowded from any other countries like Bali, Malaysia, Maldives etc.
Hello dear, According to my experience, Langkawi is one of the best places for a honeymoon trip. The island is just waiting to be explored and is best done by renting your own transport and traveling along the lush jungle roads and to the lesser known hidden beaches. It boasts many luxury hotels with villas and private pools like Ambong Pool Villas, but there is something for everyone’s budget with clean and inviting backpacker accommodation still very popular. Recently, I returned from my honeymoon trip from that awesome place & spent my life’s most memorable moment there. Hope you will enjoy there. Thanks!