Never stayed at the HGI, so it must be newer. However, the location is right next to the Napa Marriott, where we stayed last time in the area.

It is on the primary highway that you need to be on (hwy 29) in order to see all the wineries, so I believe that it is a very nice location from which to get around.

The downside as I recall is there is nothing closeby to walk to -- so you must drive to get anywhere (and not much open in the evenings around it). However, there was a decent Italian restaurant just up the road across from it that was open late.

Happy tasting!