There is a chamber in Batangas which is about 20-30 mins by car from Anilao or over an hr from Puerto Galera by boat and car. There should be another in Cebu City which is only relevant if you are diving around that area(Visayas).... It seems like one of the pieces of information that is available, sometimes, is the existence of compression chamber and location (sometimes).
This is a third world country and standard sometimes only exist on paper or imagination.
Seek a reputable operator.