Business lunch on Taylor Street?

My firm is putting together a working lunch for a group of about 15 who will be coming in from all points around Chicagoland--mostly the west and south suburbs and the city.

Office discussions determined that a Taylor Street-area restaurant would be a good geographic fit. Can anyone recommend a place down there that would be able to accomodate us in a private room? My excursions to Taylor Street have been more geared towards pasta and wine than business.

Thanks!