We stayed for a week at Casa Delfin Sonriente a beautiful bed and breakfast and rental villa in Troncones Beach about 20 miles north of Zihuatanejo about 10 years ago.
We stayed at this place and it was very nice. At the time, it included breakfast. There were several other restaurants within a couple miles. These guys were surfers and gave some lessons. They also had mountain bikes for rent. We rode bikes north along the beach one day and stopped at a beachside palapa restaurant that had great fish and lobster cooked on the open fire. One of the guys at the hotel led a group of us on the ride, etc.
Another nice place to stay is:
This place has it's own restaurant with very good evening meals (at the time anyway). The entire beach area is very quiet and uncrowded. They helped us rent a pinga(spelling?) fishing boat for one day to do a little native type fishing. There is also a small cave with one big room and a large formation that we were able to get a local kid to show us how to find. We nearly tore the bottom out of the VW getting up the road to the trail. Nothing parties like a rental.
Here is a brief Wiki summary on Troncones Beach.
Troncones is a relatively undeveloped, uncrowded beach village located about 20 miles north of Zihuatanejo on the coast of the state of Guerrero. It is located in the municipality of La Unión de Isidoro Montes de Oca and has a population of about 593 people (2005 census). Hammocks and palm trees are in most yards, chickens roam the streets and nightlife is limited to two places, the Inn at Manzanillo Bay and El Burro Boracho, making for quiet nights. On Sundays, El Burro Boracho has shows of Mexican folkdance.
Troncones has not been well-known until only recently. It was “discovered” by a North American sports fisherman who bought land here and convinced some of his compatriots to do the same. These property owners set up private homes or small hotels and guesthouses. On the five kilometers of beach, exist these houses a few restaurants, a couple of grocery stores and not much else. Even in the high season in the winter and spring it is possible to walk along the beach and not run into anyone.
The major surfing area is called Troncones Point, where Troncones Beach meets Manzanillo Bay just to the north. Waves are not very high but it is recommended for experts because the waters here are full of rocks. Many hotels offer surfing classes. There is only one surf shop. The surf has many breaks and few surfers, so there few surfers lining up for waves. Breaks in Troncones tend to be gentler and better suited to long boarders, although waves can be as high as fifteen feet during the peak season from May to November. Near the beach are two sea caves called Troncones and Majahua as well as a waterfall called Cascadas Artesianas. Sportsfishing trips to the open ocean are available as well.
In 2008, two surfers were attacked and killed by sharks in the waters off Troncones and nearby Zihuatanejo. They were the first fatal shark attacks in these waters in thirty years. Bull sharks gathered in large numbers for unknown reasons. Two surfers were killed and a third was injured. The attacks occurred during a three-week period causing a “Jaws-like mania” and the construction of lifeguard towers and the establishment of a shark patrol for the beaches of Zihuatanejo and north. It was a rare phenomenon that subsided after the sharks dispersed.