You can also include Nicaragua in your choice. You fly via nature air with a pretty much affordable pricing.Surfing is great there at low cost as well surrounded by various hostels check out www.buenavistasurfclub.com. Then going south of the capital - Granada, Ometepe or San Juan Del Sur with itineraries you can choose:
-Visit the colonial city of Granada including a boat ride on the little Islands of Granada at Lake Nicaragua.
-Trip to the city of Masaya, visiting the first national park of Nicaragua Masaya Volcano, Masaya art craft market, Catarina view point, San Juan de Oriente pottery town and canopy tour at Mombacho volcano.
-Transfer to Ometepe Island. Lunch at Moyogalpa and later walking tour in charco Verde. Enjoy the rest of the afternoon in your hotel.
-or Full day trip on the island visiting Finca Magdalena, Finca El Porvenir, Playa santo domingo la piedra inculta trail, Altagracia y el ojo de agua. Or hike one of the two volcanoes Maderas volcano or Concepcion volcano. Or hike at San Ramon Waterfall.
-Transfer to San Juan Del Sur and enjoy of the beach.
Be sure to bring in a hand pocket journal to record all the good memories that you can have on this spectacular country. Check out http://www.nomadjournals.com - they got all kind of journals (hiking, travel, writing) to make your vacation an unforgettable journey.