For casual Italian in Beverly Hills, Da Pasquale is good. It's not a place I would make a destination, but it's just a couple blocks from the Beverly Hilton. Good pastas and bread.
I've also enjoyed a couple dinners at Bouchon, if you're open to bistro fare. It's a fun, lively place in the Montage hotel.
If you like Hillstone restaurants, Honor Bar is also close by. The menu looks pretty limited, with not much more than a few sandwiches and sushi. I've never been to this one, but I've always liked other Hillstone spots.