The houseboats in Kerala, are huge, slow-moving, exotic barges used for leisure trips. They are a reworked model of Kettuvallams; these were used in the early days for the transport of goods from the isolated interior villages of Kerala Backwater area to the towns like Alleppey, Kollam, Cochin and Kottayam, Apart from excellent outlook, these houseboats are extremely eco-friendly, as it is made of bamboo poles, coconut fiber, ropes, bamboo mats, carpets etc.
Such a houseboat is about 60 to 70 feet (18 to 21 m) long and about 15 feet (4.6 m) wide at the middle. The hull is made of wooden planks that are held together by ropes of coconut fiber; the usual wood is 'Anjili'. The roof is made of bamboo poles and palm leaves. The exterior of the boat is painted with protective coats of cashew nut oil.
Kerala house boats have fully furnished single double triple and five bedrooms with sundeck, private balcony with comfortable chairs, kitchen and toilet with WC. In addition there are also separate rest rooms with and without AC