Facilities include a hotel, the area is excellent for windsurfing and swimming is good. Most of the time skinny-dipping is just fine. Punta Colorada and Punta Arena Rocky beaches around Punta Colorada, the site of a fine old fishing village, become smooth sand as you travel south towards Punta Arena. Roads wander in various directions, but avoid the one leading to the Punta Arena lighthouse as this is a military base so you can't get near the beach. Swimming and camping are good here, the best is just south of the hotel.
Some beaches have links to pages with photos and other information.