The buses and cruises that stop along Croatia’s sunny Dalmatian coast unleash tourists eager to experience the charms of Dubrovnik and the ancient island village of Hvar. Fewer visitors find their way to Pucisca on the island of Brac. The reward is a seaside village with outsize appeal: white-stone villas with terracotta roofs, narrow cobblestoned alleys, and a stone-paved square. Bask in its relative solitude and the many prime spots for swimming in the turquoise Adriatic Sea.