I want to treat myself to a very nice dinner in SF, something like Penny Roma or House of Prime Rib

What does /sf recommend?

Also open to recommendations in the east bay

Flower and water is similar to Penny Roma. Bottega is really good option. A few more:
La Ciccia
Memento SF
Horsefeather
Nopa
Che Fico

It depends what you’re in the mood to eat. You can’t go wrong with any of the below:

Steak: House of Prime Rib
Seafood (and you have time): Swan Oyster Depot
Seafood (and you don’t have time): Tadich Grill
Mediterranean: Kokkari 
Cheap Burger: Super Duper Burger

creating and destroying; built flying cars & autonomous vehicles, now building roc.camera, writings: july.rocks

Did you go yet?

Cotogna 
Or tadich ( @july is correct as always)