Definitely go to the small island of Koh Chang near the Cambodian border and stay at the Treehouse bungalows. Also, Railay near Krabi is beautiful and Koh Phi Phi is worth a visit. I’d skip Phuket. If you head to Chiang Mai/Rai be sure check out the small town of Pai. I’ve heard great things! Feel free to check out my photos and email me directly if you have more questions!~ http://www.flickr.com/photos/a_cooper/sets/72157594347628136/

alliecooper@gmail.com

good luck!