about the gym:
http://www.phuket-krabi-muaythai.com/
http://www.lamsaihotel.com/
http://www.muaythailand.com/training_camp.php?id=75&view=information_about_muay_thai_boxing_training_at_koh_yao_noi_gym_koh_yao_noi_thailand
about koh yao noi:
http://wikitravel.org/en/Ko_Yao
http://www.phuket.com/island/kohyao.htm
http://www.andamanadventures.com/koh_yao_noi.shtml