You can google turtleman's house or it's on the hotel site on this site. He can provide transportation from San Pedro. Tranquility has a budget room available also.
Please re-think driving up here during the turtle nesting season through October. The nests are VERY close to where you will be driving and can be harmed. Last year nests were lost in the Habanaros area due to driving on the beach. We have also seen nests not hatch for the past four years because of vehicles on the beach.