Violet is Heritage Line's French-Indochinese Art-Deco boutique junk - gleaming wooden floors, silks and velvets, hand-picked antiquities, and just six cabins for intensely private, romantic sailings. Three decks hold a two-per-table restaurant, a carved-backboard bar, a top-deck library lounge, a private two-room spa (one couple's room with a steam bath) and a spacious sundeck. Every suite has its own private balcony and Jacuzzi. It runs the slow, remote Bai Tu Long route - Tra San, Thien Canh Son Cave and Vung Vieng village.