One of the best kept places just for locals or people that know well the area just going to Mismaloya. So grab your beach stuff your ice chest and hit the road!.
You will find place to park along the road or just hop off from the public transportation, don´t forget to ask the driver for the specific location or let a taxi bring you to this place, it is fairly close to Puerto Vallarta Downtown Area.
As well as all the beaches along Banderas Bay or Bahia de Banderas and Riviera Nayarit, it worth to make visit.
It is a nice sandy and a little rocky beach, with shallow waters in the shore making it perfect for relaxing and having fun withouth worrying about high tides. It make it perfect for snorkeling, you can find shade but be prepared to bring your own just the way you like it.