Louis Baruc was Basque by origin and trained at Maxim's and at Fouquet's before taking over Le Fiacre, at 4 rue du Cherche-Midi, in the 1950s. Everyone called him Loulou; Nicholas Boggs records that customers also called him Louise.
He ran the house on two floors, with two clienteles that never mixed. The premier étage held a sober restaurant of twelve tables with a forty-franc menu, and it drew Parisian show business — Pierre Cardin was among the diners. The ground floor held a small gay bar, packed to the walls, whose customers had far less money and much more to lose. From 1949 until the end of the 1960s a prefectural order forbade men to dance together in public, and administrative closure was the standing threat to any bar of this kind. The trade upstairs was what bought the room downstairs its tolerance.
The New York Times account of James Baldwin's Paris says that Le Fiacre's owner became the basis for Guillaume in Giovanni's Room. Nicholas Boggs's 2025 biography reaches the same conclusion independently, indexing Baruc by name and reading Guillaume as very much in the vein of Louis. Baldwin never confirmed the identification in any letter or interview in the public record.