If one of them...which is your favorite??

Bangkok Backing Company @ JW Marriott Hotel

or

The Landmark Bakery @ The Landmark Hotel??

Not much to choose between them for pastries but the Landmark is way better for OJ and coffee. The outside seating area at the Marriott sucks as well so Landmark for me every time.

sunrise tacos pumpkin pie.

Butter is Better in Chiang Mai might be better quality than either of these places (a Thai Visa sponsor), but not as big of a selection.