Santhiya Koh Yao Yai Resort & Spa is a 5-star eco-luxury beachfront resort on Ko Yao Yai island in Thailand, blending Thai heritage design with a private beachfront and panoramic sea views. Perched on the slopes of Ko Yao Yai, the resort offers refined accommodations where most rooms overlook the sea, and signature Seawater Pool Villas feature private pools filled with 100% natural seawater that meets international saltwater pool standards. The setting pairs lush mountain backdrops with direct beach access, making it a fitting choice for travellers seeking a quieter island stay away from Phuket's busier shores. Because the property sits on a tropical island, access is exclusively by boat: Santhiya operates a scheduled speedboat service from Ao Po Grand Marina in Phuket, with three daily rounds from May to October and five daily rounds from November to April. Reservations for the speedboat must be made at least 48 hours before check-in, and transfer rates vary by season and booking lead time. Guests are asked to arrive at the pier 30 minutes before the scheduled departure. The resort caters to couples and families alike, with a child policy that allows children aged 0-1 to stay free, and dedicated rates for children aged 2-11 and additional adults. A compulsory Gala Dinner applies on 31 December, with a minimum two-night stay required across New Year's Eve. With a private beach, sea-view villas, purified-seawater pools, and on-site spa facilities, Santhiya Koh Yao Yai Resort & Spa suits travellers who want an island escape rooted in Thai design and natural surroundings. Plan ahead, secure your speedboat transfer, and enjoy a peaceful Ko Yao Yai stay.