Brazilian interior designer Sig Bergamin's beach house retreat in Trancoso is a crazy mixture of styles, periods, colours, textures and patterns, combined into lighthearted compositions against a crisp backdrop of white floors, walls and ceilings. The laid-back attitude of the house is very much in keeping with the spirit of the dreamy coastal village in the state of Bahia, which has remained miraculously undisturbed by development and modernisation over the centuries