My husband and I are coming to San Francisco for the first time next month. We are staying at the Ramada in Union Square (the one which was built in 1916 and renovated in 2001). In the mornings, we'd like to go out and find a not-terribly-expensive, fairly portable, definitely yummy breakfast (good bread or pastries, juice, coffee) so we can munch while we wander the city. Please let us know about anyplace the fits the bill that's within a 15-minute walk of this particular Ramada. Thanks!