USP The chic, minimalist hotel is built around a volcanic crater out of which gushes a piping hot sulphur bath that bubbles all day and night.

AMBIENCE A medical spa with a holiday feel — encircled by hilltop villages and Etruscan tombs.

EXPERIENCE Each day I took a brisk walk around the Tuscan hillside before hopping into the pool. Later, I had an oxygenating multi-vitamin facial, which included a mask made of the slimy plankton that arises spontaneously from the sulphuric water (which left my skin feeling and looking wonderful).

FOOD A four-course lunch and I ate till I popped. Amazingly, when I got back I found I had not put on a single pound.

IN CROWD Mixed, affluent clientele seeking rejuvenation, and glowing Italian families.

WALLET WATCH Three nights from £870 per person, includes flights, full board, five treatments and a fitness programme.

NEED TO KNOW Erna Low (020-7594 0290; www.bodyandsoulholidays.com)

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