A keyword that should pull up quite a bit of related information would be: "Digital Nomad" (though I'd think covid is still throwing a wrench into much of that).

The most "stereotypical" answer is Thailand, which offers cheap internet, food, month-to-month accommodations, friendly to visa runners (hopping over the border for a day and coming back into country every X months to reset your visa), quite a bit to do, and is also pretty safe.