buses reach the entrance to the condominium, but not to the beach trail, so the best options would be a taxi or a rental car, not to have to walk along the stretch of road inside the private condominium.   

the walk inside the condominium to reach the beach trail takes about 20 minutes, and it is steep.  the beach trail itself takes another 10-15 minutes.

if going by taxi, the return trip should be booked in advance with the driver, as taxis do not drive by frequently in this area, and almost never inside the condominium.