It's not on a lake or ocean, but the cooler clime makes for a nice change of pace for a day or two. Bird-watchers will want to stop by the wetlands west of town. This large island, southeast of the capital, is the site of the run-down but charming colonial town of Bonthe. There is also a resort facility on the neighboring Turtle Islands. Stop at the visitors center for information.
Accommodations are available.
The area is not easy to reach, but worth the trouble.