It's quite a luxury when everyone at home is talking about the weather, and you are not worrying about the weather even a little bit at all.
I'm telling you about Ometepe Island again because I hope that you will add it to your list of places to go. It is full of all of the things you like to do-- hiking, swimming, rope swinging, scooter riding, waterfalling, ziplining, kayaking, basking, chocolate making/eating, laying around-- What else could there be? Maybe you are a crazy person who likes to hike 10 hours up and down steep volcanoes; it offers that, too.
And to the people who told me to take the early ferry home and not to wait for the last one, I am kindly suggesting that you rethink your advice.