Which city inspired the song "Copacabana"?

Barry Manilow's "Copacabana" took the world by storm in 1978, spinning the tragic tale of Lola and Tony at the hottest nightclub around. The catchy disco track with its theatrical storyline became one of Manilow's biggest hits and earned him his only Grammy Award. Which city was Manilow in that sparked the idea for "Copacabana"?