Khao Lak is Phukets sleepy neighbour. Tranquil, classy, long stretches of beaches and worldclass sunsets. Phang Nga province is just so paradisical so we can understand that someone name their hotel Eden.
Koh Talu is a great choice if you long for white sand beaches and turquoise water relatively near Hua Hin. Famous for coral and turtle conservation projects it also has a good reputation for sustainability.