We are going to be spending the month of February in a house in Atenas and want to plan a weekend trip to the beach. We have children ages 4 and 7, so I'd like to find somewhere where it is really easy to walk out the door and be on the beach, and with calm waters that little kids can splash around in. It sounds like Manuel Antonio is prettier than Jaco, but I'm concerned that it might be too much to pack up our stuff and drive to the beach - especially since we'll probably only last a few hours there - so Jaco might be better for young kids? Also we'll have seen a lot of jungle stuff/hiking up by Atenas already. On the other hand, we're really not party people, and will not be happy in a super noisy, crowded, touristy town. Any advice?