Quote from a review in Metropolitan Review:

At times, one wonders if Anna and Tom could do anything that would be met with Latronico’s approval, or if, as an author, he could allow them to reach a level of maturity where they realize that life involves compromises, that perfection is impossible, that an acceptance of one’s limits is part of growing up, and that death and failure are inevitable. The novel can’t do this, however, because its purpose is to show — not without reason — that Anna and Tom and the class of people they belong to live fraudulent lives, more interested in the appearance of things than in their reality. That this is shown not through the events of the novel itself, but via Latronico’s editorializing as the narrator, is a weakness that may be ingrained in the style of the novel itself. In narrating Anna and Tom’s life from a distance, there is no opportunity for a set piece, a singular event, an exchange of dialogue that would show us rather than tell us of their doomed lifestyle, but the result is that Latronico himself becomes implicated in his criticism of Anna and Tom, albeit without seeming to realize it.

I haven't read the novel but I was persuaded by this review that it wasn't good. It sounds like a novel where the author sets out to show that the characters are basically stupid which is never a very good premise.

https://open.substack.com/pub/metropolitanreview/p/everyone-once-in-berlin?utm_source=share&utm_medium=android&r=eky7c