Question: The American reality television series Russian Dolls, features families living in whatoceanside neighborhood in the southern portion of the New York City borough of Brooklyn, along the Coney Island peninsula?
Context: Coney Island USA is a 501(c)(3) not-for-profit arts organization founded in 1980 that is dedicated to the cultural and economic revitalization of the Coney Island neighborhood of the Borough of Brooklyn in New York City.  Its landmark building in the heart Coney Island's amusement district houses a theater in which the organization presents "Sideshows by the Seashore", a showcase for performers with unusual talents that runs continuously during the warmer months, as well as the Coney Island Museum.  It is also notable as the organizer of the annual Coney Island Mermaid Parade, the first of which took place in 1983. The West End Line or New Utrecht Avenue Line was a surface transit line in Brooklyn, New York City, United States, running along New Utrecht Avenue and other streets between Coney Island and Sunset Park.  Built by the Brooklyn, Bath and Coney Island Railroad as a steam line, it became a trolley line, along which elevated trains ran until the new elevated BMT West End Line opened.  This route is no longer part of any bus line; its southern part (south of Bath Beach) was part of a bus route - the B64, which replaced the 86th Street Line trolleys, until 2010.  In 2013, the B64 route to Coney Island was restored. Gone to Coney Island and Booming Business are two 1910 American silent short comedy productions by the Thanhouser Company.  Both were released together on a single film reel on July 5, 1910.  "Gone to Coney Island" is a comedy that features Coney Island, which the mere subject would make for a successful film.  "Booming Business" may have been the very type of slapstick comedy that Edwin Thanhouser specifically said the Thanhouser Company would not produce.  The productions of both films have no credits for the cast or crew, but possible candidates for these roles exist.  Reviews of the films favored "Gone to Coney Island", but some reviewers specifically refused to explain the plot because Coney Island subjects were deemed self-explanatory.  "Booming Business" received one detailed review in "The New York Dramatic Mirror" which was negative.  The films are presumed lost. The Riegelmann Boardwalk, named for Edward J. Riegelmann but known by many as the Coney Island Boardwalk, is located along the southern shore of the Coney Island peninsula in Brooklyn, New York City, adjacent to the Atlantic Ocean. Russian Dolls is an American reality television series on Lifetime.  The series debuted on August 11, 2011 and finished on October 7, 2011.  The series follows the lives of eight Russian-American families living in Brighton Beach, New York. Brighton Beach is an oceanside neighborhood in the southern portion of the New York City borough of Brooklyn, along the Coney Island peninsula.  According to the 2010 United States Census report, the Brighton Beach and Coney Island area, combined, had more than 110,000 residents.  Brighton Beach is bounded by Coney Island proper at Ocean Parkway to the west, Manhattan Beach at Corbin Place to the east, Sheepshead Bay at the Belt Parkway to the north, and the Atlantic Ocean to the south along the beach and boardwalk. Coney Island is a peninsular residential neighborhood, beach, and leisure/entertainment destination on the Coney Island Channel, which is part of the Lower Bay in the southwestern part of the borough of Brooklyn in New York City.  The site was formerly an outer barrier island but became partially connected to the rest of Long Island by land fill.  The residential portion of the peninsula is a community of 60,000 people in its western part, with Sea Gate to its west, Brighton Beach and Manhattan Beach to its east, the Lower Bay to the south, and Gravesend to the north. Ditmas Park is a neighborhood in western Flatbush in the New York City borough of Brooklyn, east of Kensington, and is one of three Flatbush neighborhoods which have been officially designated Historic Districts. Located on land formerly owned by the Ditmas family that remained rural until the early 20th century, the neighborhood consists of many large, free-standing Victorian homes built in the first decade of the 20th century.  The traditional boundaries of Ditmas Park, including Ditmas Park West, are from Ocean Avenue to Coney Island Avenue, and from Dorchester Road to Newkirk Avenue.  Ditmas Park is policed by the New York City Police Department's 70th Precinct, and is within Brooklyn Community Board 14. South Brooklyn is an "obsolete and imprecise" historic term for a section of the former City of Brooklyn – now the New York City borough of Brooklyn – encompassing what are now the Boerum Hill, Carroll Gardens, Cobble Hill, Gowanus, Park Slope and Red Hook neighborhoods.  It was named for its location, south of the original Village of Brooklyn.  It should not be confused with the geographic southern region of the modern borough of Brooklyn, which includes the neighborhoods of Gravesend, Sheepshead Bay, Gerritsen Beach, Seagate, Coney Island, Brighton Beach, and Manhattan Beach, Mill Basin and the area near Kings Plaza. Coney Island Avenue is a roadway in the New York City borough of Brooklyn that runs north-south for a distance of roughly five miles, almost parallel to Ocean Parkway and Ocean Avenue.  It begins at Brighton Beach Avenue in Coney Island and goes north to Park Circle at the southwest corner of Prospect Park, where it becomes Prospect Park Southwest.  Near-parallel Ocean Parkway terminates five blocks south and three blocks west of that intersection, becoming the Prospect Expressway (New York State Route 27).  Ocean Parkway originally extended north to Park Circle, where Coney Island Avenue meets Prospect Park, until construction of the Prospect Expressway replaced the northern half-mile of Ocean Parkway but included ramps to the edge of Prospect Park.
Answer: Brighton Beach