My Credit Union has what they call a Near Mortgage rate of 4.95%.Around 5.6% is the best I've seen. But there might be better out there.
Looks like you can borrow up to €100,000. On their calculator anyway, the max term is only 5 years, a very short term for a big loan, I wonder is there any flexibility there.
https://www.southdublincu.ie/