There will be four of us traveling to Sirena ranger station in Corcovado for a 4 night stay there, and we are looking for the most inexpensive way to get there. We will be in San Ramon, but can get to San Jose if that would be a better place to start the trip. I see that the boat rides are around $350 each way once we get close enough. Would it be best to rent a car and drive ourselves or go by bus or taxi? Which town would be the best to go to for the boat ride? Thank you for any suggestions!