Crystal clear waters, remote access, and cliff diving. Seitan Limania is a spot known only to locals and the few U.S. military that transit the nearby naval flight line. The view is absolutely gorgeous. This is a once-in-a-lifetime beach.
Access is a little remote and requires a steep decline down a rocky trail, so wear shoes and avoid bringing anyone that can't manage a little mountain climbing.
The classic tourist town of Chania is nearby as well.
The actual location of the beach is 6km due east of the position the map, at the end of a switchback road (the map doesn't accept the exact location when I pin it).