I'm looking for some advice on a trip to Costa Rica or Nicaragua. The lady and I are looking to go in September or October. She's not much of a surfer, but I'm looking to surf all the time while I'm there. See the criteria below and if anyone knows of some good spots I'd really appreciate the insight.

Affordable
Walking distance to multiple breaks
Resort-like
Plenty of activities available to keep the girl busy
Simple airport transportation

Thank you!