The tasting room is located off the lobby of the Westin hotel.
I paid $40 per tasting at Chateau Montelena's San Francisco Tasting Room.
Reservations are not accepted at the establishment.
A few nearby places worth checking next.
I have been using it now for 3 months and it saves me so much research. Reduces the need to call and double check every time.
How did I not know these places existed?! Atly's scoring is a lifesaver, now I can finally find THE spot without wasting time Googling my life away.