Italy: Castello Del Nero, Tuscany

Whether it’s relaxing at the only ESPA spa in Tuscany, truffle-hunting with a local guide or learning to cook Italian, this boutique retreat in the Chianti countryside has something for even the most discerning guest, says Olivia McLearon

The world’s best villas

An abode in Death Valley, a converted kiln and a palatial property costing £18,000 a night... Issy D’Arcy Clark scours the globe for one-off wonders