There are many HomeStay in Thailand that you can enjoy the good experience with thai local peoples. Koh Lanta is a big island not far from Phi Phi island where you can enjoy your holiday more than the beaches. Sonya house is a homestay where not just a homestay. Sonya house is
not a place for who love luxurry accommodation but it's comfortable enought and you can walk for 5 minutes to the beach.
The price to stay is 100 baht in dorm room and 150 baht in private room per person.
There are 2 showers and 1 kitchen. You can check at this site
http://sonyahome.blogspot.com/.
In monsoon season you can have 300 baht with meals (with family).
This is not advertise from the family but I'm their friend who are in love with this house and children here so I just want to help them make more friends (They love to meet new friends from around the world).
If your mind not open you may don't like here much because it's not just a house to sleep.Enjoy in Thailand