Port Vathy is definitely the safest anchorage in Sifnos, if gusty due to the meltemi (the Etesians) (the Etesians). It is a pleasant setting, if somewhat remote from the rest of the island, with a nice sandy beach.

Anchor off anywhere in 3-4 m, or do an anchor moor to the small mole at the North of the cove, where there is space for three yachts in depths of 2.5-3.0 meters (but limited mooring rings). The bottom is sand and provides good holding. A choice of good taverns ashore and a mini-market.