The Data Protection Commission is trying to get more information from Airbnb after a hidden camera was used to
The Barker family from New Zealand discovered the device hidden in a smoke alarm when they were staying in the house as part of a trip around Europe last month.
Air BnB has apologised and given them a refund - the house has also been taken off the site.
Nealie Barker explained how they made the discovery, saying: "My husband got on to the house WiFi network and as is his custom, he's an IT consultant by trade, he scanned the networks of the house.
"He saw a device called an IT camera which didn't belong to any of us.
"Almost immediately the live feed of a video recorder or camera popped up on to his mobile phone and we could all see ourselves."