Last minute get together for 4 new mothers (sans children, ladies night out). Looking for a not too expensive bistro on east side - easy access from Grand Central since two of us are arriving there from outside Manhattan. Looking for a casual atmosphere with good food. Les Halles is a consideration, but it's really loud and maybe a bit on the higher end of moderately priced. Has anyone been to L'Acajou lately? Any other suggestions would be greatly appreciated.