Jansom Bay is a tiny beach on the south-west side of Koh Tao. When you come with the boat from Samui or Pha Ngan you will pass it on your destination at Koh Tao pier. I just visited the beach just for one afternoon on a cloudy/windy/rainy day, so there were quite a lot of boats from the diving schools, which looked for shelter. But you find a friendly relaxed athmosphere. The only bar/restaurant is run by settled Chao Leh , a type of people quite different to the original Tao population, which came from China in the mid of the last century. huge rocks, sandy beach, cold beers, food - what else do you need more ?