I have seen issues similar to what you, Emanon, experienced. People who advised they never have a problem with this particular resort need to understand and remember one important thing: Unfortunately, Asian service culture mostly is designed to provide fantastic, spotless and admirable service only until something will go wrong. It may not be a fault of one particular service representative, but for some unknown cultural factors, all activities after the incident would likely be directed to
a) attempts to prevent face loss (e.g. proving that they are right and you are wrong)
b) denial
c) containment (attempts to solve issue locally without escalation outside of particular organization)... needless to say that these attempt are almost always laughable due to a) and b) above and mostly are directed on wearing off a claimant and hope he/she abandons efforts.
4) discrediting the claimant by trying to show claimant erred in some other things not connected to the incident, therefore claimant can not be trusted with correct description of the incident itself
5) intransingence to make good, even if requested by higher authority (e.g. WHQ).
6) retaliation (sometimes petty retaliation like nasty letter, sometimes not so petty like charging your credit card twice - again laughable, but it happens even if they think they can not reasonably expect to get away with it).

So absence of the issue in the past (or in your current stay) doesnt absolutely mean you would not have issue on your next stay, even if that would be in different hotel or outside Marriott chain. So I wouldnt recommend anyone to remove this hotel from their travel list as situation like this can happen anytime, at any hotel. There are some exceptions to this however they are infrequent and far apart (having Expat GM usually helps).

I can only sympathise to Emanon who, as it seem, experienced all of that, however Emanons experience reconciles well with what I have experienced during my trips.

AX