We searched the planet to find 20 of the best by-the-sea retreats you can rent for less than $7,000 a week (eight days, seven nights).
At the crossroads of the Pacific Ocean and the rain forest on Costa Rica's serene Nicoya Peninsula sits Casa Luna, a contemporary white-stone villa. Bifold glass doors and windows facilitate views of mountains and ocean from every room. A private deck and Jacuzzi are a bonus off the master bedroom, but the sleek infinity pool is perfect for experiencing Costa Rica's eco-tourism attractions up close—howler monkeys, scarlet macaws, and agoutis roam the forest canopy, and may even make a cameo on your private patio. Bonus: There are three beaches just down the hill from the villa.
Rates start at $3,500 per week; 877/573-8872 or jetsetter.com.