There are standard fan rooms for more budget travelers, or for a small upgrade there are superior rooms which have the added advantage of air conditioning. (lakotour.com)
I found that 75,000 - 100,000 (8 - 11 USD) provided a nice, clean fan room in most places, often with a private bathroom. (travelhappy.info)
You can avail of a standard fan room for around $ 18 for three people or an A / C room for three for around $ 20. (adventureinyou.com)