As most people will be holidaying at home this year, why not bring your pet. Here is a recent list of dog friendly hotels in Ireland - many of these are expensive hotels and charge rates per dog.

https://evoke.ie/2021/06/22/life-style/travelnews/dog-friendly-hotels-staycation

Check out other booking site - most booking sites have filters for 'pet friendly'/ 'pets' without additional cost, for example

https://www.hogansirishcottages.com/pet-friendly-cottages-in-ireland.html