The famous lagoon of Balos is located approximately 56km northwest of Chania and 17km northwest of Kissamos, formed between the Cape Gramvousa and the small Cape Tigani. Balos is surely the mostly photographed beach in Crete, a very favorite subject of all tourist guides for Greece. It is no coincidence that Prince Charles and Princess Diana visited Balos with their private yacht many years ago.
Balos is famous for its turquoise waters, the wild natural beauty and the beautiful exotic scenery. During the summer, Balos is visited by thousands of people, who arrive mostly by the ferries running from Kissamos port. If you do not like crowds, you’d better avoid to visit the beach in July and August. Also, a perfect idea is to arrive at Balos in the morning, before the boats arrive from Kissamos. These few hours of remoteness in such a heavenly place will remain etched in your memory forever.
(source: http://www.cretanbeaches.com/Beaches/Chania/balos-lagoon/)
The cache is located on the peninsula.