Dear Dale and Linda (and Marion?):
Though they are only an hour and fifteen minutes apart, Santiago and Santa Fe are quite different, both in terms of size and altitude/micro-climate.
If it is Santa Fe that you are interested in, you may want to try getting directly in touch with the only real estate office in town, which is http://tuterealestate.com/ (Janethitchens@yahoo.com, Panama cell phone +507-6677-3806), to inquire about rentals.
Hope that helps.
Regards,
Jessica Ramesch
IL Panama editor