All beaches on Puerto Rico are public. Resorts that dominate a beach must provide public access, usually by a path running alongside the property from the road to the sand. Only guests of the resort or hotel may use the chairs, umbrellas, and other amenities belonging to the hotel.
Some resorts offer day passes for non-registered guests that allow use of some or all facilities. If you’re interested, check with the reception desk for costs and privileges.
Waterfront restaurants and beach bars often have tables, chairs, and umbrellas on the beach and allow customers to linger there as long as they continue to buy drinks or snacks. In some cases, a resort will allow use of their beach facilities if you have lunch at any of their restaurants or schedule a service at their spa. Again, get information at the reception desk.
Words to look for:
cayo – cay or key
bahia – bay
balneario – public beach with facilities and lifeguards
blue flag beach – water quality certified clean, lifeguards and facilities are available.
playa – beach