The anchorage is over sand with good holding. I stay there often. Some swell should not be an issue. Sometimes the wind can be very gusty. Very good snorkelling off the back of the boat all the way to the dive site. No amenities on shore. I think that the beach is rocky

Warren S/V Scuba Doo
Lagoon 50 (winner of best crewed yacht under 55 feet at the St. Thomas crewed yacht boat show).

https://www.cyabrochure.com/ebn/2307/pdyrX/6642/4///