I believe there are properties in Dublin offering 10% yields but, historically, anything above 7% would be considered pretty good.
The problem is that interest rates are so high for BTL mortgages. If someone is getting finance, the 5% or so interest on borrowings would consume most of that 7.5% yield.
Therefore, in my opinion, a 7.5% yield is only going to appeal to owner occupiers and some investors buying with cash.
You have to remember that most of the 10%+ yielding properties are appartments which also have service charges associated with them.