- A Premier vacation getaway in Costa Rica. We are located on the Osa Penninsula on the Gulf of Dulce. We cater to everyone from Super Delux to tight Budget tours, be it a few people or large groups. We offer everything from Bird watching to surfing, from Kayaking to snorkeling. Personally guided tours based on your groups desires, expectations and physical ability are available.www.escondidotrex.com