Classic rookie mistake made by a lot of small-time landlords.Because yields after tax are not worth the risk of a dud tenant, particularly given very expensive BTL finance, CGT @33%, and pretty heavy rent controls.
You never borrow to invest.
I know a guy who has 5 properties, a few are flats in Limerick, think Gardiner Street type of location.
He bought for 40K each, does all the letting, maintenance himself, and has done well, income and capital appreciation.
One was bought at auction, without being able to view - he found tenants in the basement. I wont go into the gory details.