Some of these are closed, including Slanted Door which I did eat at in 2018 and was excellent.
Also, I'm not sure what kind of dining budget some of you have
Everything in SF has markup, but here are some options that may be more cost effective, yet still good food:
Breakfast:
Sweet Maple - Lower Pac Heights
Plow - Potrero (this is pricey but excellent)
Breakfast Little - Mission (grab the burrito and walk/eat up on Valencia and not down on Mission)
More Basic Lunch/Dinner:
Tony's (Pizza/Italian) or Joe's (Italian) - North Beach (this is more about ambiance than food though the food is good at either)
Roma Antica (Italian) - Marina
Tacolicious (Mexican) - Marina (local chain, solid food and nice location)
Flour and Water (Italian) - Mission
China Live - Chinatown (pricey but not as pricey as some other things listed)
Beretta (Italian) - NoPa (go to this one, not the one on Valencia as though parking is miserable at both, the NoPa one is better situated)
La Taqueria (Mexican) - Mission (some people think it is the best burrito in the city, this is more lunch on a weekend)
San Tung (Chinese) - Sunset (best chicken wings in the area and solid Chinese food)
Pearl 6101 - Richmond District (just very solid)
Little Star (Pizza) - Multiple locations, most interesting pizza crust ever (cornbread)