What would be the cheapest option regarding accomodation food and transportation and generally speaking cost of living? and the easiest in terms of tourist visas?
I guess food is pretty cheap everywhere.Cambodia is probably the easiest in terms of visas.Thailand has the best infrastrucutre but not so cheap anymore specially when you want to be close to the beach.
6 mths in one spot? Indonesia would be the cheapest I woul think.
Thailand has some cheap LT rentals though. You can get a basic bungalow in Nopphorat near Ao Nang for 6000 baht a month. They wont be on the net though.