is a small private island of the Vava'u
archipelago in Tonga. The beach is good, but not the best even by the standards of Tonga. According to the island's owners this is one of the few places in the world, where you can swim with the whales right from the beach. Shore and seabed: sand, stones. 
Hotels  Treasure Island Tonga
is a three-stars eco-resort. As with most of other "eco" hotels, it means very basic conditions for overpriced rates.
On the other hand the staff is hospitable, trying to do their best to make guests feel happy. So the hotel is worth a few nights, if you agree to pay the price. Find hotels in Eueiki
How to get there 
Fly to Tonga International Airport (TBU)
. Next take a domestic flight to Vavaʻu International Airport (VAV)
. There are also flights from Fiji to Vava'u islands.
Hire a taxi to the pier in the south of the main island, and next take the hotel's boat. Transfer fees and other aspects should be arraged with the hotel in advance. Find flights to Eueiki
When to go 
The best time for a beach holiday in the islands of Vava'u is a dry season from May to October. As for the whales watching, the best is a period from June to November.
Water temperature, C
Wind speed, meter/sec