I agree. I'm not so sure about that whole hot on the left cold on the right standard. Sure, it works that way in the US (where H is Hot and C is Cold in any event any way). It also might work that way MOST of the time in CR, but I've come across places where I'm not so sure the foreign plumber who installed the pipes got the manual.
Adding to the confusion, its not always so easy to discern the difference between hot and cold once you start spinning those faucets. The "hot" water that comes out when you start turning that "C" faucet on the left in places like CR is not always all that hot. Even when it is, it might take a long while before that tepid warm water makes its way through the hotel's pipes to your showerhead or tap. You start to wonder "is the lack of truly hot water the result of "pipe delay" or did the tico plumber screw up"? In desperation, you start spinning that "H" faucet on the right in HOPES that MAYBE that MIGHT get you some truly hot water. Finally, you come to the realization that NEITHER tap ("H" OR "C") really means anything because there wasn't any hot water to begin with and the plumber simply installed both taps he had in the set just because they were there.
BTW, for you Rio guys, does the Hot on left Cold on right apply south of the equator too or do they do such things backwards down there too (like which way they spin the water when it goes down the drain).

I'd imagine they don't have the same problem confusing what the "C" is for since Hot is Quente in Portuguese