I spent a week down there in 2000 and had a blast. I would advise traveling to and staying in some of the smaller towns/villages near either coast (if you email me I can get out a map and tell you the names). There are some cool rain forests, a volcano, and even a bar where you can feed monkeys bananas. Oh yeah and of course topless beaches. Whatever you do don't bum around San Jose - get out to the inner part of the country and the coast!