"That guy has more charisma in his little finger than anyone!" the 39-year-old actress told people.com.
"I mean, he just is like a big teddy bear! His smile just warms the room and he's lovely. He's everything that you wish that he was," she continued. "I can't say anything bad about the guy, unfortunately," she added.
Akerman also added that Johnson, who's about to welcome his second daughter with girlfriend Lauren Hashian, is a "super softie."
The baby girl, who's due on April 25, will be Johnson's third daughter.
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