I have been to SF dozens of times in the past ten years, but always with kids; I last went to the city in adult company in perhaps 2000. I will be in town for business, and have one night when I am on my own and would like a good solo dining experience with great food. I eat absolutely anything; my only constraints are that I need to make reservations for early June (so nothing where I need months of lead time), and I need to be able to walk or take a cab from downtown. Since I have four kids, "kid-unfriendly" would be quite welcome. Suggestions?