There is a little beach where boats drop people off, or it's possible to swim in the waters in front of most of the guesthouses. There are even little fish in the water, which nibble off dead foot skin, if you keep still enough. Be careful! Currents can be very strong, and jumping in the river is not recommended if you are not a confident swimmer. Just like in the ocean, if you do get caught in a current that's difficult to swim against, don't fight it, but turn 90 degrees and swim out of it. You may end up some way downstream, but it's better to have to walk back to where you started, or even wade back through the shallows, then to be caught in the middle of the river with no energy left to swim. At Don Det there's almost guaranteed to be an easy place to get out of the water and back up to the ring road further downstream.