Eileen Haywood acquired the business, which includes a restaurant and six bedrooms, after securing a £450,000 finance package from Santander.
The venue, based at Aboyne on the banks of the River Dee, has previously won a Taste of Scotland Award for its food.
Ms Haywood plans to build on the reputation The Boat Inn enjoys for its cuisine by adding new dishes to the menu. The restaurant is said to regularly attract diners from Aberdeen, 30 miles away, as well as tourists.
Ms Haywood, who has more than 10 years' experience in the sector, also owns and operates a holiday cottage letting business, which includes the Bothy at Collonach.