If it's a meditation center, many people just come to visit the place, go on the lake, feed the fish or have a coffee in a nice and peaceful setting.
See here a list of accommodations close to Cherntawan Meditation Center
The center is located not far from a lake where in the dry season when the water level has dropped small huts on stilts welcome you to eat.
Cherntawan Meditation Center is a temple and when you visit a temple in Thailand there are some rules to know and follow :