I have seen Mimosa trashed on here recently, but went there last night as a party of three with good results.
After the obligatory cornichons and olives, we started with their thin-crusted "provencale pizza" which was not a true pisaladiere (sp?), I don't think, but more simple. Still quite delicious.
Then two of us (your carniverous servant included) had the onglet--hangar steak. We ordered it just the way the French require on penalty of death--rare. And rare it was, but also tender and tasty. This is one of the more satisfying beef dishes in Los Angeles. And you don't feel as if you've eaten an entire cow afterward.
Disgusting yuppies that we may be, we abjured the pommes frites (they looked superb, alas, on someone else's plate!) for a more cardio-friendly side order of artichoke hearts prepared almost as a ratatouille. Quite good.
Lady Lipitor ordered the roast bass, which was also excellent.
All was rounded out by a good French syrah offered by the glass.
What can I say? We didn't have a problem with the service, as others have here, and I still prefer Mimosa to Pastis. It's my LA bistro of choice.