hall of mirrors

There is insufficient context to know what the intended meaning is.

In the first place, assuming that an author actually expressed something meaningful, as opposed to simply writing something which sounds pithy and meaningful, but in fact is not.

The Hall of Mirrors refers to a chamber in the Palace of Versailles, in which the Germans were made to sign the treaty which ended the First World War for them. Without further context, it is not possible to know if the author refers to that.

A hall which is lined with mirrors in a place in which an individual would see only him- or herself, and not others. Without more context, it is not possible to know if the author is perhaps referring to a self-absorbed person, who can see only herself.

Another possibility: an amusement park's indoor maze with mirrored walls.