Chichiriviche is a popular resort destination in Venezuela notable as the northern entry point to Morrocoy islands. Some beaches are one of the best in the country. However, most of the islands are not very interesting, and overcrowded with the domestic tourists during the weekends. Shore and seabed: sand, stones. 
Hotels in Chichiriviche are rather expensive and poorly presented in the online booking systems. As for the islands, sometimes it is possible to spend the night in a tent, though officially it is not permitted.
Fly to Caracas international airport (CCS) and get by bus to Chichiriviche (via Puerto Cabello). Next take a boat to the island you need. Please note, that best mainland beaches can be reached by boat only.