@Trish537. Hi Trish, I'm not Irish, although I am a descent of the McNamara's from Tipperary so I'd say you've proabably had the luck of the Irish with your taxes until now. 😉
Here Down Under our tax laws say you generally cant claim anything that is personal use. So if this was a listing here you would only be entitled to claim the interest for the weeks it was actually available to rent out ie pro rata interest. and thanks to Airbnb data our tax office now has all this information.
But I am no longer a tax agent so yes, best to decide if your new tax accountant is right.