Prioritize beach access and spa/wellness facilities, then evaluate dining variety and ambience, and finally check accommodation type (villa, suite) suitable for couples. Look at the best_for notes (beach lovers, wellness and relaxation) to gauge fit, and weigh trade-offs like family-focused features versus intimate settings. For example, Koh Samed options emphasize direct beach access and wellness, Phuket offers dining variety, and Khao Lak adds spa and event spaces.