Villas in Thailand
Where you choose will depend partially on what kind of experience you are after, and the season in which you travel.
If you go in the rainy season, you will want to avoid the beaches and head for the countryside, with its green rice paddies. There are all kinds of exotic things to do and places to explore off the beaten path.
If you want a more mainstream experience, then there are Phuket, Koh Samui and Krabi in the south, Hua Hin in the central region and Chiang Mai in the North.
For something unique - a private pool villa surrounded by rice fields, with a private pool and great Thai cooking from the local hosts, try
Gecko Villa in the Northeast, out of Udon Thani. They also say they can arrange kick boxing training with a retired professional Muay Thai boxer. if you are looking to exchange rather than rent, they exchange their other villas
Green Gecko and
Rice Paddy Villa.
If you intend to fly, try the local budget carriers Nok and Air Asia - although personally I would avoid One To Go!