Thiw Son Beach Resort is a cozy gym hotel located on the pristine shores of Koh Yao Yai island in Thailand. The resort offers a small but well-equipped gym with a range of exercise machines and free weights. Guests can enjoy a variety of fitness activities, including beach volleyball, kayaking, and snorkeling. The resort also features a swimming pool and a beachfront restaurant serving delicious Thai cuisine. With its tranquil atmosphere and convenient fitness facilities, Thiw Son Beach Resort is a great choice for travelers seeking a gym hotel in Koh Yao Yai.