Favela Chic, which we might quite liberally translate as "ghetto fabulous," takes its name from a Brazilian nightlife trend in which the hip, educated, and employed plunge into Rio shantytowns, where the downtrodden, streetwise, and dirt poor know how to party away woes. If you're looking for a quiet, candle-lighted ambiance, slip into this place before 11:00 p.m., especially on Fridays and Saturdays. After that the restaurant/lounge tends to start imitating the high-spirited, caipirinha-fueled, arm-waving, butt-wiggling displays of revelry that lured the well-heeled across the tracks and into the fabled favelasto find a girl from Ipanema, at least figuratively. There is no charge to enter this elegant North Beach shanty either, but those inside will have an easy time taking five of your (date's) hard-earned dollars for a beer or eight bucks for a caipirinha(a lime-flavored cocktail made in Brazil with cachaça, in North Beach with vodka). Owner and DJ Roberto Costa, who has rocked dance floors from Saint-Tropez on the Mediterranean to Jimmy'z on Arthur Godfrey Drive, provides musical mixes of house, samba, salsa, and Arabic. Yes, Arabic.