Banyan Tree Samui is leveraging the anniversary as an opportunity to offer 25% discounts on all accommodation, food & beverage, spa facilities, and on-site shopping. The promotion, which requires guests to stay a minimum of two nights, got underway on March 29 and runs through 19 December 2019. Banyan Tree Samui has 88 villas, each with a private infinity pool, at a luxurious property that is nestled into a cascading lush hillside on the island of Koh Samui, overlooking the Gulf of Thailand.