I have been to the Maison du Luxembourg twice in the past there months; the first time being February and the second in April. Each time the meal exceeded expectations, the service was spot on, and the ambience was good.
This last visit was grand with a wonderdul piece of beef for the main course and a rasberry soup for desert that was not heavy and capped the meal off quite well. You do have to make reservations, however it is well worth it.
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