Flûte Bar & Lounge by Herve Rousseau. Since 1997, if you want to taste an excellent Champagne in New York, the Flûte Bar & Lounge by Herve Rousseau is the ideal meeting point in Midtown – Manhattan. In fact, near the Carnegie Hall and Central Park, Herve decided to open its first Flute Bar, in an already famous place since the days of Prohibition.