The article below isn't specifically for retirees but it has some good ideas for inexpensive places to spend your idle time.
Ko Samui, Thailand - Expenses: Around $20 per day
This idyllic island is increasingly popular with globetrotting tourists, and it's no wonder. If you're looking for clear blue water, cheap massages and drinks on the beach, Ko Samui is paradise. The village of Chaweng has some of Thailand's best beaches, and the most active nightlife (think foam parties, Ibiza-style) on the island. You'll pay about $15 a night for a nice hotel, and $5 will get you more than enough food.
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