If someone's posts seem to be relentlessly positive for the most part, especially about one particular spa, chances are you are reading propaganda.
When you go to the spa and the girl is no where near as attractive as promised, or your session was nothing like what you read online, then most likely what you read was not a review but advertising.
Best way to evaluate any particular poster's reliability is to browse their history and look for patterns that are usually pretty easy to see.
If they basically always seem to have a great time at the same place with sessions that seem almost too good to be true, that should be a red flag for you about their reliability.
If they seem triggered, defensive and attack posters who have any honest feedback about the spas and girls they always write about, chances are it's for business reasons.
Some fake reviewers will try to sprinkle in some negative feedback to create a patina of objectivity, but on balance you will see the goal is simply to cultivate trust so you spend your money where they are directing you to.
Anyone can post pretty much anything for any reason here on MP, so it's like the wild west and anything goes. Real reviewers will typically have a range of opinions and a balance of positive and negative experiences.
This business preys on the horniness and gullibility of men, so being able to differentiate between legit clients who are trying to provide you helpful information versus spa owners who are masquerading as clients and trying to sell you something is pretty critical.