Sri Lanka promises some of Asia’s best spa action, and many of the treatments offered at the following hotels have been modelled on Ayurvedic principles, one of the world's oldest holistic healing systems that believes in good health through lifestyle practices. From the south coast beaches to the blissfully quiet mountainsides of the Hill Country, spas across the idland come in all shapes and sizes, and treatments include wraps, scrubs, massages and tailored programmes administered over a number of days as prescribed by an on-site Ayurvedic doctor. Yoga classes, thermal pools and steam baths, some overshadowed by hanging creepers, others in the breeze of the ocean are also common here. For a soothing stay, here's our pick of the best spa hotels in Sri Lanka.