From Saint Tropez, it’s a short cruise out to the Isles d’Or, the ‘Islands of Gold’, of which Porquerolles is the star. Often likened to the Caribbean for its aquamarine water and sugar-white sands, this sleepy Mediterranean island promises idyllic days of lazing on the beach and wandering the olive groves and vineyards. When you’ve had your fill of snorkelling and sunshine, head along the Marseilles coast and drop anchor in one of the Calanques, mini-fjords of clear turquoise waters and high cliffs.