The islands of Koh Yao Noi and Koh Yao Yai are the newest additions to the tourist itinerary - especially for those searching for the ultimate getaway island.
The main island of Yao Noi now has electricity - this may seem an odd thing to mention but many of these islands have not had such facilities until recently. Even a big island like Phang Nga near Koh Samui didn't have any electric supply until the mid nineties.
Along with such luxuries come newer amenities and shops and before you know it there is the 7-11 open and ready for business, to be followed by a string of banks with ATM machines.
There are some seriously expensive hotel resorts on the east coast of Koh Yao Noi, where the price of paradise in hotels such as the Paradise Resort is around a minimum of 5,000 Baht a night.
Top of the forest canopy, as it where, is the Evason Resort and Spa where a peak season de luxe villa at the Evason Resort will set you back 43,000 Baht a night. It does include breakfast.
In the middle of the range is the Holiday Resort with a less daunting 2000-3000 baht a night range.
All these hotels are on the east coast of Koh Yao Noi, which is by far the most developed of all the beach areas in the area.
If the budget is tight, fear not, a beach bungalow at Yao Yai island resort, with a fan cooled room is 950 baht a night and on the less developed Koh Yao Yai there is the Heimit Gardens.
A fan room will cost as little as 800 Baht - the rooms are equipped with TV and DVD players, a fridge and optional air con. They will also arrange free transport from the pier at Loh Jak in the south of the island. This is where the direct car ferry arrives from Phuket's Jian Warnitt Pier.
These are the true commercial enterprises which are found in most resorts, but Koh Yao is unique in that is has embarked on an eco tourism programme which has already won awards for the contribution to environmentally friendly and community based tourism.
It is possible to book a "homestay" on Koh Yai Noi where the visitor will live with a family and pay for lodgings and food. The homestay is 150 baht a night with 150 baht charged for food and a 100 Baht donation to the environment fund.
That all adds up to 450 Baht but still a bargain Full information on this can be found at http://www.koh-yao-noi-eco-tourism-club.com
Please bear in mind the majority of the islands population is Muslim, so conservative dress is appreciated.
Koh Yao Noi and Yai may be some way off from the day when tourist hotels are built for the mass market, so see it while it still remains a quiet island with empty beaches and a fascinating natural history.