Behind the somewhat terse name (referring to its address at 49 rue Royale), there lies a charming private mansion whose original decor is enhanced by well-placed modern touches. The delightful terrace overlooking the courtyard to the rear of the building is a particular highlight. The dishes are creative and rigorously executed: sea bass ceviche, hazelnuts and seaweed; duck breast, chanterelle mushrooms, red curry sauce. Excellent wine list and selection of spirits.