There is no tourist infrastructure where we were at - there are some villages to "visit" in northern Thailand, but I do not believe they are set up for overnight stays (we were honored with a flat board to lay our sleeping bags on). Add to that, that our guide took what looked like a random turn off the highway between Chiang Mai and Chiang Rai, and 2-3 hours later up muddy roads we found ourselves in the village. All I can really say then is Northern Thailand, get yourself a guide or a motorcycle.
Traveling as a Production Supervisor with a student crew making a short documentary on an organization working in Thailand to top child-sex-trafficking, we found ourselves spending a night in a small village in the mountains, near the Burmese border (where there were no children left between the ages of about 6 and 20). We stayed at the house of a sub-chieftain there and spent some time sipping his homemade rice whiskey before I noticed the clouds had gone, and I stepped away from the light of the house with some of my students to capture a few shots of the far mountain ridge below the multitudinous stars.