Back when I was living in New York, I think I took for granted the fact that it really was "the city that never sleeps". Literally any hour of the day, I could get my hands on anything I craved. Bars stayed open to 4, delivery services ran around the clock and worked lightening fast, and there was always a restaurant open serving exactly what I was in the mood for, no matter what crazy hour it was that I wanted it. Now, let's compare that to San Francisco, where bars start winding down at 1 AM and close at 2. It's a place where most restaurant and bar kitchens close around 10 PM and food delivery is an utter joke. If it's past 10 PM and you feel like having a great late night meal, you've got to approach the situation with a little more care and a lot more knowledge.
If you're ready to drop some bills on serious sushi in San Francisco, Akiko's is the place to do it. All of the fish is ridiculously high-quality and a good portion of it is even imported directly from the famed Tsukiji Fish Market in Japan. All of their preparations are utterly impeccable and do that magnificent fish the justice it deserves.