Hi Douglas,
Thanks for reaching out.
Which part of Ireland are you looking to visit, and what are you looking to experience?
There are many popular resources for house swapping, such as
HolidaySwap and
LoveHomeSwap. There is also a popular group on Facebook called (Home Swap - AirBnb), where AirBnB owners exchange their listed accommodation which may be of interest.
Let me know if you have any other questions,
Cathaoir