Speaking at a media event at the Curragh Barracks, the Fianna Fáil leader said "basically speaking Dublin is safe".
Tánaiste Micheál Martin has said "certain areas" of Dublin city "are not safe to traverse at night".
Speaking at a media event at the Curragh Barracks, the Fianna Fáil leader said "basically speaking Dublin is safe".
However, he admitted "there are concerns" about some areas.
Mr Martin condemned the "vicious attacks" that have happened in Dublin city in recent weeks, including the attack on a US citizen on Talbot Street last week.
The Tánaiste also rejected suggestions that gardaí are "invisible" and said officers are visible on the streets.
His comments come as Assistant Garda Commissioner Angela Willis will meet the Dublin City Council Joint Policing Committee this afternoon to discuss policing in the capital.