I went nice cafe on California street in S.F. The cafe has high celling and many umbrella were hanged from the ceiling. Because of the building structure, the cafe allows to have natural light and doesn't need to have light during the day. Although I was in the inside of the cafe, I felt really open and free atmosphere.
Coffee was about $2.00- and good. Also this cafe is kid friendly.
3465 California Street, San Francisco, CA 94118-1836