Debbie,

Welcome to my forum. There are very few castle hotels in Northern Ireland. If you click on IrelandYes Index and on Castle Hotels you will find a link to Ballygally Castle Hotel. From the photo you will see that the actual hotel rooms are not in the castle portion.

Whenever anyone inquires about a castle stay with the word reasonable in the request, I find that once they know the rates a castle stay becomes a luxury that not many people will spend the money on. Whether that is true in your case depends on your budget.

There is another castle that is available as a self-catering rental called Killyleagh.  

Ballygally and Killyleagh are not a personal recommendations because I have not stayed at them. You will have to look at their websites to see if they appeal to you.

Michele