Step one takes four minutes and happens before you reach the treatment room. A copper bowl, warm water, coarse salt, two frangipani heads floating on top. The therapist washes your feet and presses along the arch with her thumbs. Twelve hours in a seat pools fluid in the lower legs. This clears some of it, and it marks the boundary between the journey and what follows.

Step two is the Balinese massage, ninety minutes rather than sixty. The oil is coconut, warmed, with a little sandalwood in it. The work runs long and slow along the length of the muscle, palm pressure rather than kneading, with thumb points held at the shoulder blade and the base of the skull. Those two places carry the flight. Ask for firm rather than medium. Light pressure will send you to sleep, which is the opposite of the aim.

Step three, the warm stones, comes in the last twenty minutes of the massage rather than as a separate booking. River basalt, smooth, heated in water to around fifty degrees. Six go along either side of the spine, one in each palm, two under the shoulders. Heat reaches deeper than hands do and holds the muscle open once the pressure lifts. You will feel your breathing drop lower in the chest. Let it.

That last hour of light does more for the body clock than the treatments do.

Step four is the flower bath, and it is not decoration. A deep terrazzo tub, water at body temperature rather than hot, the surface covered in frangipani, marigold, hibiscus and bougainvillaea. Twenty minutes. Hot water at this point would push you further towards sleep. Warm water at skin temperature settles the nervous system without sedating it. The scent is green and slightly peppery, closer to wet garden than perfume. Tea comes with it — ginger, lemongrass, no sugar.

The order matters because of when it ends. Book the sequence to finish around half past five. You walk out of the pavilion into low gold light, past the frangipani by the main pool, with roughly an hour of daylight left. That last hour of light does more for the body clock than the treatments do. The spa work makes you willing to stay awake for it.

Then eat. Dinner at De’ Kesambi at seven, something with rice and chilli rather than a light plate, because a proper meal at a local hour helps the clock reset. Skip the second glass of wine. Sleep will come easily at nine and you will wake at four, which is normal on the first night. Read for an hour. The second night is usually the one that holds.

Two things to avoid on day one. A cold plunge, which is bracing and then leaves you flat by six. And a scrub before the massage, which sounds sensible and mostly just takes time you would rather spend horizontal. The whole sequence runs about two hours and twenty minutes. Tirta Wangi takes bookings the same morning, though the late-afternoon slots go first in July and August.