Mademoiselle de Neuf

Seven as "Mademoiselle de Neuf"

Le Coeur de Lion was a restaurant run by Kathryn Janeway's holodeck identity, Katrine, in 2374, when the Hirogen created a World War II French Resistance holodeck simulation. It offered fine food, wine, and entertainment as provided by a singer each evening. The cafe's owner greeted guests dressed in a white tuxedo and circulated among the guests to share stories and actively manage the business. (VOY: "The Killing Game")

When American forces invaded the city, captain Miller of the US 5th Armored Infantry set up a command post in the restaurant. (VOY: "The Killing Game, Part II")

Janeway as a nightclub owner

Janeway as nightclub owner Katrine

In an attempt to engage the Voyager crew in violent holodeck simulations, the Hirogen placed Captain Janeway, Seven of Nine, Neelix, Tuvok, and B'Elanna Torres in a simulation of the Nazi occupation of France during World War II and had them run Le Coeur de Lion as a cover for their underground activities for the French Resistance during that time. In the simulation, Tuvok was the bartender, Seven of Nine the lounge singer Mademoiselle de Neuf, and Captain Janeway, Katrine, the cafe owner. The Hirogen used neural interface implants that wiped everyone's memory and made them believe they were actually the characters in the simulation. (VOY: "The Killing Game")

"Le Coeur de Lion" is French for "The Heart of the Lion".
The interior of Le Coeur de Lion incorporated parts of the Chez Sandríne bar set used earlier in the series. (Star Trek Encyclopedia (4th ed., vol. 1, p. 457))