Koh Samui's spa hotels combine tropical seclusion with serious wellness offerings. At Melati Beach Resort & Spa (fabulous 89/100), guests wake to private pools or outdoor bathtubs, then head to the spa villas for massages or the 2 swimming pools. Code Samui, rated superb 88/100, sits in tranquil Bang Por and pairs ocean-facing suites with an infinity pool, steam room, and hot tub-ideal for digital detoxers who still want a fitness center. For a more polished experience, Kimpton Kitalay Samui by IHG (superb 91/100) in Bophut offers direct beachfront access, an infinity pool, yoga classes, and a spa, all within 4 km of Samui International Airport.
Budget-wise, expect to pay between THB 3,000 and THB 8,000 per night for these wellness-focused rooms, depending on season and suite type. First-timers should base themselves in Chaweng for nightlife access or Bang Por for quiet beach days. All three hotels include free Wi-Fi, and most offer airport shuttles or free parking-confirm transfers when booking. Note: Melati requires a minimum stay during peak periods, and Kimpton Kitalay's family rooms fill fast, so reserve early for guaranteed spa slots.