We always take traveler's checks. Since you are staying at CCLP, just ask them what is their rate of exchange at the desk/bar etc.. it may be as good as the Cambio, or not.
I misplaced (or something) $300 in t checks a few years ago. The bank refunded my money, no problem. Do keep all your papers
they give you when you get their checks.
Have fun,
Respect,
