Lidia's is a bar owned by Lidia Bicchieri.
Deal with Oswald
Oswald Cobblepot offered Lidia to work with him. Lidia said "No" many times, but then she decided that she could work with Oswald by one condition. She wanted Oswald to make her granddaughter Antonia to break with her boyfriend. Oswald did as wished by cutting the boyfriend's fingers since the boyfriend was a musician. Lidia then allowed Oswald to be her "secret partner".
After Tommy Bones's release of prison, Maroni decided to celebrate at Lidia's. But a hitman hired by Oswald, Connor, arrived and attempted to kill him but his pistol was with no bullets, Connor was then killed.