Costa Rica

[GMP]

I'll be going to Costa Rica in a couple weeks and plan to do a little riding among other things. I'll be staying in Puntarenas, about an hour north of Jaco Beach so they tell me. Anyone with experience in renting a bike and going on a ride with a guide for a day? I see a lot of multi-day long tour type stuff but I can't do that as its a family vacation, just a day in the woods (jungle?) on a real woods bike is what I would like. Thanks.