Carrizalillo is the beach in Puerto Escondido with the least waves. It is where the beginner surfers go to learn, as the other beaches of Zigatella and La Punta are for advanced surfers.
After you walk down a series of very steep steps to get to, Carrizalillo is dappled with restaurants, where you can pay either 100 Pesos for a deck chair, or alternatively spend that much on food and drink (100 pesos is conservatively eight dollars, which will get you a juice and some tacos).
There you can just chill out for the day, but be weary that if you need to go to the toilet you need to get the key form the first restaurant on the left as you are facing the beach and pay the equivalent of fifty cents.