Ultimate guide to which Greek islands are unspoiled paradises – and which to avoid: I’m a travel expert who’s visited them all and these are my pick of hidden beaches, wildflower hills and glorious tavernas

An advertising executive in 1959 proposed promoting Greece as ‘an exclusive country, a holiday “Eldorado”, far off the usual tourist itineraries… for persons of wealth and refined taste’.The Greek islands – with their promise of sunshine, azure waters and...