hey vix...
yup, terai and i went here, and it is quite secluded indeed.  we would meet a foreign tourist couple occasionally but the most number of people i saw swimming at any one time was 4 (excluding the scuba divers down below when we are snorkeling).  
funny thing though, the first thing that greeted us was an old stinky lady in an old barong toga for ladies, and a sign that read 'respect morality'.  hmmm, i think that sign was intended for us, so we would behave in the strictest traditional primitive way.  although that still didn't stop terai's subconscious from teasing the old lady, as soon as she arrived to check on us for the 2nd time, terai stripped to her bikini and let me tighten the strings.  MWAHAHAHA!!!