I'm a beta tester and its San d'Oria just like the official website. Being located in Bastok I offer up this as proof.

When you go to the auction house go select "Other" then "Food" the first item on the list is "Bag of San d'Orian flour".

Now while the the item is spelled San d'Orian I would think it is safe to say that San d'Oria would be the correct spelling in game too.