The Plaza Suite was a discothèque owned by Gambino crime family underboss Sammy Gravano in Bensonhurst, Brooklyn, New York City.
Wilfred "Willie Boy" Johnson (September 29, 1935 – August 29, 1988) was a United States (FBI) Federal Bureau of Investigation informant from 1966 to 1985.
 He provided the FBI, who code-named him "Wahoo" because of his Native American heritage, with information relating to John Gotti and other members of the Gambino family.
 Johnson was a friend of Gambino crime boss John Gotti even though Johnson was informing on him.
John Gotti (October 27, 1940 – June 10, 2002) was an Italian-American gangster who became boss of the powerful Gambino crime family in New York City.
 Gotti and his brothers grew up in poverty and turned to a life of crime at an early age.
 Gotti quickly rose to prominence, becoming one of the crime family's biggest earners and a protégé of Gambino family underboss Aniello Dellacroce, operating out of the Ozone Park neighborhood of Queens.
Victoria was born in Brooklyn, New York City.
 Her father was convicted mob boss and criminal John Gotti and her mother was Victoria DiGiorgio, who is of Russian Jewish ancestry on her mother's side.
 Victoria Gotti was raised in Howard Beach, New York with her siblings John, Pete, Frank, and Angela.
The Gambino Family was an American hip hop group founded by Master P in 1997, named after the Gambino crime family.
 The four members of the group were Lil Gotti (After John Gotti), Malachi, Pheno and Reginelli (After Marco Reginelli).
During the 1980s, DeCicco worked as a sidewalk soldier in the old crew of John Gotti, then run by Angelo "Quack Quack" Ruggiero, but because Ruggiero suffered from cancer in 1989, Gotti's brother Gene took over the crew, only to discover that he would be convicted of drug trafficking and narcotics charges and sentenced to 50 years in prison.
 Working with Gambino mobsters John Carneglia, Salvatore "Fat Sally" Scala and Arnold "Zeke" Squitieri for many years, DeCicco was at that time promoted to the rank of caporegime in the family.
 He is the brother of Frank DeCicco.
Richard G. Gotti (born November 30, 1967) is a member of the Gambino crime family.
 His father is Gambino capo Richard V. Gotti and cousins are capo John A. "Junior" Gotti, former reality television star Victoria Gotti, and Peter Gotti, Jr.
 His uncle was Gambino boss John Gotti.
Angelo Salvatore Ruggiero Sr. (pronounced roo-JEH-roh) (July 29, 1940 – December 5, 1989) was a member of the Gambino crime family and a deferential friend of John Gotti.
 Under Gotti's leadership Ruggiero became a caporegime though he became widely seen as an over talkative enforcer type without the astuteness needed for running lucrative rackets.
 Gotti, by then the most targeted criminal in the country, came to share the assessment amid mounting investigative pressure and costly blunders by the inveterately indiscreet Ruggiero, who had completely fallen from favour by the time of his death.
 The FBI regarded Ruggiero, whose open defiance of law enforcement extended to swearing at the judge during a hearing, as an unpredictable psychopath not amenable to confrontational tactics.
Growing Up Gotti is an American reality television series that appeared on A&E.
 It featured the life of Victoria Gotti, daughter of Mafia boss John Gotti, and her three sons; Carmine Agnello, Jr., John Gotti Agnello, and Frank Gotti Agnello.
 The production of the pilot episode was announced in January 2004 with the show being picked up several months later.
 A&E canceled "Growing Up Gotti" after three seasons.
 In 2014, the network aired an anniversary special "Growing Up Gotti: Ten Years Later".
Salvatore "Sammy the Bull" Gravano (born March 12, 1945) is a former underboss of the Gambino crime family.
 He is known as the man who helped bring down John Gotti, the family's boss, by agreeing to testify against him and other mobsters in a deal in which he confessed to involvement in 19 murders.

Question: Where was the discotheque owned by the man who helped bring down John Gotti located?
Answer: Bensonhurst, Brooklyn, New York City