Act as a seasoned travel planner specializing in yoga and wellness retreats with over 10 years of experience curating transformative getaways. Provide a detailed list of the top [NUMBER] destinations for yoga and wellness retreats in [REGION/COUNTRY], focusing on [SPECIFIC NEEDS, e.g., luxury, budget-friendly, detox, or spiritual growth]. Include key details such as the best time to visit, average cost, unique offerings (e.g., Ayurveda, meditation, or adventure yoga), and accommodation quality. Highlight any standout retreat centers or instructors. Tailor recommendations to [TYPE OF TRAVELER, e.g., solo travelers, couples, or groups] seeking [GOAL, e.g., relaxation, healing, or fitness]. Ensure the list is well-researched and includes insider tips for maximizing the retreat experience.