Check Hayward airport and American Flyers... they used to have a Seneca II with nice panel. Owner is a Greek named Costas.
Also in the Building, that used to be Flightcraft, is an other small school that have a C310.
Then Flying Vikings add the Scandinavian flavour with their Seminoles.
All the schools have singles too...
Also Oakland flyers in KOAK is an ok place for rentals.
JJ