I'm traveling to San Francisco for the first time, staying at 4th and Market streets. I seek a place to have breakfast (out of the hotel) that is very close, very cheap, very good, and ideally very quick. Not looking for fancy, not looking for a unique experience (although I welcome those if they arise), just good, cheap American food. Eggs, yogurt, granola, orange juice, that's about it.
I could walk a few minutes, I could take a bus a few minutes, but I would like it to be readily accessible.
Thanks very much in advance.