I stayed in Playa Hermosa outside of Jaco in central CR last year. It was a really nice beach break. Supposively its the most consistent break in CR. Hermosa is a cool area to stay in because it is not very built up, but you have Jaco right down the road which is more built up and has the nightlife.
Banana Con Leche'.................PURA VIDA!!!!
heck ya - banana con leche