Road trips with virtual strangers are always fraught with peril--an exit strategy should be part of your planning. Remember in hotel shopping to check on an in-room safe or front-desk safe. The fact that Chicas don't get paid til the end should constrain their more lurid ambitions.
I agree that Jaco might be a better choice but if PV is the place, try our friend Colins' place:
http://www.bananaazul.com/ He and his male partner run a nice place and will be very helpful--he is also a Resident Expert on
http://www.tripadvisor.comAs is renting a vehicle in CR or anyplace in the 3rd world. This guy needs to seriously chill.