There should be a rule, don't remake a great classic movie if you have nothing new or interesting to add to it. This looked like the Hallmark version of Hitchcock's classic film noir. Lilly James is overacting the shy, inexperienced character, she walks like Forrest Gump in some scenes, for example where she's following Rebecca's ghost at the party. She also pouts all the time. Armie Hammer has the intensity of a carrot, he's too vanilla for the role. His suits are horrible, badly tailored, the mustard suit in the beginning is an eye sore. Kristin Scott Thomas as Mrs Danvers is the only saving grace of this movie. And finally, the cinematography is bad. It's like somebody wanted to make a rom com and changed their mind in the last minute. Those happy, ultra saturated colors don't fit the mood of a dark gothic romance novel in the least.
