Regarding best locations in Koh Samui, there is no right answer of course as this depends on such factors as personal preference, reasons for purchase etc. That being said, the north-east of the island is where a majority of property development has occurred and where most people, but not all, seek to buy property. Within the north-east, Choeng Mon, Plai Laem (this includes Tong Sai Bay, Tongson Bay), Chaweng Noi and Bo Phut are the generally the most sough-after areas. Choeng Mon & Plai Laem are close to the tourist centre of Chaweng, the airport and Fisherman’s Village at Bo Phut, which has a good range of high-quality restaurants. Cheong Mon itself also has an excellent long sandy beach but is quieter than Chaweng Beach, the main tourist hub. Tong Sai/TongSon Bay also have their own smaller and more private beaches and bays.  Choeng Mon and Plai Laem have a lot of high-end hotels, such as Six Senses and Melati, adding to their gentrification. There is virtually no residential property for sale on or next to Chaweng Beach as all this land was long ago taken by hotels. However, beyond the ring road in Chaweng Hillside, there is a range of medium price property with views over Chaweng Lake. Chaweng Noi, just 5 mins south of Chaweng towards Lamai, has a good selection of medium and high-end sea view villas for sale.
 
Other than the north-east, there are some high-spec properties to be found on the north coast with good beachfront at Maenam stretching to the north-west coast at Bang Por/Ban Tai – these are more peaceful beaches than Maenam but still great sand. For high-end beachfront villas, the west coast around Lipa Noi is also popular due to the good quality of the beach and the sunsets. After Chaweng, the second most popular tourist town is Lamai on the south-east coast. Laem Set and Hua Thanon (both near Lamai) have a few properties for sale.