Koh Samed or Samet is nearby and an easy do without flying anywhere.
Popular as a "Thai" getaway from Bangkok, it is an island, part of the Thailand National Parks. Taxi or bus to Ban Phe and speed boat over to the island. Few cars on the island, no organized gay life to speak of, but people are friendly and relaxed.
Nice place to watch the sunrise, sunset, swim and chill. Swimming in clean water and beach side massages. Accommodations to match all budgets.