Watson, 25, and her new man, 35, spent a week-long getaway in California's luxurious Big Sur, enjoying the amenities and scenic landscape at the Post Ranch Inn and stopping by the local bakery, where they were said to enjoy a wood-fire pizza together, reported E!Online.
"Mack is just a normal, down-to-earth guy who has nothing to do with Hollywood, and Emma loves that," a source said.
"She was left really hurt by her break-up with Matthew (Janney) and it's taken her more than a year to feel ready to start again with somebody. They're really happy with each other and see each other whenever Emma does not have work commitments."
Back in October, Knight was seen escorting Watson from the Richard Rodgers Theatre on Broadway in New York City after seeing "Hamilton", a hip-hop musical about the Founding Fathers.