Lamai is a great town on the island of Koh Samui, Thailand in the Gulf of Thailand & is one of my favourites. Its smaller and less busy than Chaweng but has everything you need. Good Beach, Great Bars, Food & Hotels.
For travelling to Lamai from Bangkok you can get over night train or bus. You can get tickets and picked up on khaosan rd, you will get Ferry from Surathani when you get off bus/train. This is great way to travel when you have a lot of time. We have done this trip about 20 times over 15 yrs but now when we visit we fly into Samui Airport from BKK. My Favourite Bars to visit are Kellys Tavern in Lamai (say hi to danny) great for football and pool, Full Moon Bar & The Shamrock Pub. We usually stay in Weekender Resort.
Food is great! Theres always a different restaurant to eat in the next night. Street food is good too and of course the beach food.