My bf and i will be staying in SJDS for 4 days and would like to go to Ometepe for 1 day (no hotels) and then back to SJDS. I want to plan a fun and adventurous itinerary. We would really want to go volcano hiking, see nature, come across a waterfall and explore other highlights if we have time. Any good trusted tour guide recommendations? has anyone has done this in one day trip by themselves? We only plan to go there for 1 day. may consider 2 days. Thanks for your help!