My wife and I are planning a trip to 3 different hotels in Costa Rica in January of 2012 and can't decide if it is better to rent a car or go with private transfers. The three locations are El Silencio Lodge in the Rain Forest about an hour from San Jose. Then, Tabacon for three nights in Arenal and finally, Punta Islita on the coast for 4 nights. Is it better to have a car at these locations? How difficult is the drive? What would be the cost for a 4 x 4, with GPS and the mandatory insurance? Thanks!