Sometimes, I'm at loss as why some reviewers have such abnormal and illogical expectations from a series and decide to belittle and trash it at all cost, not feeling or not wanting to feel its vibe nor sense it.
I say so because IMO, Berlin Station was a very good and interesting series, in all its 3 seasons, with good writing, beautiful soundtrack & cinematography, nice plots and professional acting. What you need to do is to immerse yourself in it and let each season's story drag you into its confines.
Of course, the above couldn't be done if a series is bad in its layers, which is not the case of Berlin Station and never was.
Believe me, I'm very critical myself and if something is dashingly wrong, I would surely indicate and write about it.
Some are critical of Ashley Judd not being able to act or having whatever voice she has. IMO, she acted decent enough, was one of the characters of the series (please pay attention, one of the characters!, she was not a planet having others satellite her), her voice was her voice, nothing specially bad and was okay.
Each season has its own interesting twists and turns that always keep your attention, believe me.
Of course, I won't say they are perfect. They are what they make you feel in each season and the feel of it was appreciative and satisfying.
Recommended to all fans of spy series wherever they live.
On a side note, I had my own deceptions when it was decided to end it after season 3, but it is what it is and you cannot always have it your way.
Looking forward to another spy show, whenever it would be and hoping that it would be as interesting and joyful as Berlin Station.