Those seeking a meditative retreat will find Guntu (http:// guntu.jp) a little piece of heaven on earth – or water, for that matter. A luxury vessel with just 19 rooms designed in the style of traditional ryokan, this 3,000 tonner – which embarked on its maiden journey in October last year – sails on the tranquil waters of the Seto Inland Sea. The two- and four-day journeys offered are perfect excuses to go completely off the grid. Recalibrate in its generously sized rooms that boast a terrace and even an open-air bath, as well as rejuvenate at the spa on board. Also, nourish your body with the creations of chef Kenzo Sato (previously from the two-Michelin-star Shigeyoshi in Tokyo) and sushi master chef Nobuo Sakamoto, made using the freshest catch of the day – taken to the boat directly by local fishermen.