Babysitter Needed for my Children - Now Hiring

We spend 3 weeks every summer on Marthas Vineyard, at a simple cottage in a gorgeous location with an ocean view, 2 miles from the Chilmark General Store. Would like to bring our grandson next year (2027) and know that wed need a nannys help during daytimes. My wife and I are in our 70s. Private bedroom available, but bathroom is shared. Driving is part of the job the main beach (Lucy Vincent) is 3 miles away. We had several au pairs when our kids were young & know how to build a happy relationship with caregivers.