The restaurant was issued with a closure order last month.
The Food Safety Authority of Ireland (FSAI) ordered C.C’s Coffee Dock to close under the European Commissions Official Control of Foodstuffs Regulations, 2010.
According to a statement by the HSE, a pest infestation was the reason behind the closure.
The HSE later confirmed that the enforcement notice was lifted at 5pm on Saturday 4 April, after compliance with the actions recommended by the Environmental Health Officer was verified.