Don Det is a small island located in the middle of Mekong River in Si Phan Don (4000 islands) in Laos. It used to be an off the beaten part of the country until it gained popularity for its relaxed yet cool vibe. Top things to do here include dolphin watching, kayaking, and countryside cycling.
Pakse is a city in Southern Laos where the rivers Mekong and Xe Don meet. Many backpackers use Pakse as a jumping point to other places in the country but it is also worth a day or two. If you take a few days off to relax, Pakse is the perfect spot. Here you can take a peek at the Buddhist temples, shop at night markets, and enjoy laid back Lao culture.