I usually have a look on google maps with a search of ‘caravan sites near xxxx’ when visiting new areas. In this case ‘Camac Valley CP comes up just to NW of the city, but a quick glance at the website it seems to be tent or tourer with no other holiday accommodation.
I’ve looked for sites in Republic of Ireland before with static caravans to hire but there isn’t many of them. Be sure to search for “mobile home” too as that is what they call them out there, “static caravan” yields few results. Can’t think of any places off the top of my head but they are out there.
Also, weirdly they don’t supply a tv as standard in mobile homes unlike here. You either hire one or bring your own apparently.