Hi -
Have you considered B&Bs as an alternative to impersonal hotel chains? Since they're in private homes, you'll meet the family, get more personal attention and enjoy a large hot or cold (your choice) breakfast, which is included in the price. Most have three to six rooms to rent.
Ireland has over 2,000 bed and breakfasts, with single and double rooms from 30 to 60 Euros a night. You can begin a search on the Irish Tourist Board (ITB) website, though you should book directly with the facilities themselves to avoid booking fees. ITB used to publish a wonderful and free B&B guidebook, but it looks like they've ceased that practice.
If you have an idea of the counties or towns in which you plan to overnight or visit, I can probably suggest some B&Bs I've enjoyed in my many travels all over the island.
Slainte!