[Avodah] Lashon Hara?

[Liron Kopinsky]

See below. I am cropping the letter a little bit to remove information
about what the actual service is.

I recently posted a review of a session I had with a councilor on a group
on Facebook.  A woman emailed me saying that she thought the review was
lashon hara because it could negatively impact the councilor's parnassah.
 I am under the impression that one is allowed to give honest feedback
about a business to other people who are researching the product/service.
Here is what I wrote:
OK, so since we are all talking about <these> workshops, let me share my
experience. I had a private meeting with <so-and-so> (the woman who'll be
teaching the class). She is very knowledgeable and helpful and I
appreciated learning from her how to understand <subject-she-teaches>. I'm
glad I went to her, but it was expensive and I honestly think I could have
figured most of it out on my own by reading <a well-known book on the
subject>. The only reason why I went to her is because I <have some
specific issues and my situation is a little complicated>. So she did help
me figure that out, but if you <are in a normal situation>, I suggest you
read the book first. I'm also a self-learner and can figure things out on
my own and already have a good working knowledge of the <subject-at-hand>.
Some people do better with an instructor, so the class would be great for
you. But for me, it wasn't worth the money. Hope that helps!
Do you think that is problematic vis-a-vis hilchos lashon hara?
Thank you!
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