Doubletree SFO South - Have stayed there a few times already and always chosen the breakfast over the 1000 points, (although the 1000 points still appear mysteriously
).
Gold members here and given full-breakfast buffet coupon for every day of the stay. Every time they would also ask if there's a 2nd guest staying and without hesitation hand out a 2nd set of coupons if there are.
Coupons entitle full-breakfast buffet, which is amazing and even includes a cheese selection and smoked salmon.