@crschmidt Scutra has a nice patio with bike art overlooking the path, but it's not that great getting from the path to the entrance.
Not a business, but the new Lexington visitors center is well designed for the path, with plenty of parking and public restrooms easily accessible.
Sadly not currently open, but Bike Stop did have a rear door that they made clear was open for path users.
Possibly the biggest disappointment is Bedford Depot. Perfect spot for ice cream or a cafe.