Playa Potrero is a fisherman beach. You can go there to watch people fish or even catch your own fish. We like to go to Las Brisas to eat and watch the fishermen. It is walking distance to our condo, about 200 meters.
It is nice to walk down this beach in the morning. And on low tide days, you can easily walk to Hemingways. It would be about a mile walk up the beach.
I probably would not go there to swim, it is not as clean as Playa Penca or Playa Prieta.