My small amount of research discovered that you can live in a serviced hotel room for between 15,000 and 30,000 THB per month, which is $500 - $1000 USD. This

My small amount of research discovered that you can live in a serviced hotel room for between 15,000 and 30,000 THB per month, which is $500 - $1000 USD. This was in Chiang Mai. I explored a couple of different hotels. You can get serious discounts for booking a room for 3, 6 months. Combine that with eating out for every meal (instead of grocery shopping and cooking for yourself) and it's an incredibly cheap option. Meals are as cheap as $1 each.