UPDATED for 2019-20
Despite having no villages, shops, local houses, roads, vehicles or mains electricity, there are five places to stay, a mixture of backpacker style thatch huts and simple resort-style bungalows.
A handful of lovely small beaches line its north shores, with a simple coastal path connecting them together, a walk of no more than 30 minutes. The interior and other coasts are untouched forest.
Not surprisingly, given its location, shallow waters and white sands, Koh Wai is immensely popular with snorkeling boat trips coming out from Koh Chang and it does get crowded at certain times of day.
Heading further south, Koh Mak is 30 minutes away by speedboat and Koh Kood 90 minutes.
Our guide to speedboats from Laem Ngop and private transfers from Bangkok to the pier. Details too on flying in and out from Trat Airport, public buses to Trat or the Koh Chang Piers and of course island-hopping from Koh Chang, Koh Mak and Koh Kood.