Post House — Local services in Gonzales

I'm confused why this is listed as the "Post House". I know it's on the property of the Post Ranch Inn, which is part of the original Post family homestead. But the historical Post family home known as the "Post House" is located across the street from the entrance to the Post Ranch. It's under the ownership of the Ventana Alila Resort which sits on the east side of the original homestead, now divided by Highway 1. It's currently closed but sometimes operated as a BBQ restaurant named "Big Sur...