We are flying into San Jose for a week in Costa Rica. First three nights are in Westfalia just south of Limon followed by four nights at EARTH University in Guacimo. We are considering skipping the taxi and using public transportation both to get back and forth from the airport and while we explore the area. We don't speak spanish and want to know if it will be easy, fun, and cheaper than renting a car. Don't want to have a big hassle just to save a little bit of money.