"It was such a shock. It was just a really horrible feeling," Nealie Barker told CNN.
Next, Andrew Barker called the owner of the property. When confronted with the family's discovery, Nealie Barker said, the host hung up. Later, he called back, insisting the camera in the living room was the only one in the house.
"We didn't feel relieved by that," she said, adding that the host refused to confirm whether he was recording the livestream, or capturing audio.
Aoife Mullen, communications manager for Ireland's Data Protection Commission, told CNN that the commission was "aware of the issue," adding, "we will be seeking further information from Airbnb on the matter."
"We've become much more cautious now," she said, advising other travelers to learn how to find hidden cameras. "We think people need to realize that the travel market is largely unregulated and if you would take issue with being filmed, then you need to take all steps properly."