Colinsito,
Welcome to CRT!!! You may remember me from TA. I didn't think this was your sort of board, but it is nice to have you here.
Guys,
If you need to know anything about Puerto Viejo, Colinsito is the guy to ask. You should start by checking out his website as well as
http://puertoviejosatellite.com where he is an active contributor on their forum. He really knows his stuff and we're lucky to have him here.
BTW, that GeckoTrail website also offers a whitewater tour option that can pick you up in SJ and drop you off in PV at the end of the day (or vice-versa). Or, if you're a little more adventurous and on a tighter budget, provides instruction on how you can do the same thing for a little less by taking the bus to the Turrialba in the morning and onward from Siquirres to PV after the rafting. Particularly if you were thinking of going rafting one day anyway, it would be like getting the transportation to PV for free PLUS it eats up one less day of your trip.