First of all, if you are able to book this castle do it. It's booked months out for a reason. The hundreds of positive reviews are all true.
So for my review, I want to tell future visitors things they may not already know.
Our entire trip around Ireland (Dublin, Galway, Cork) was amazing. Staying at Pete's castle was the absolute highlight.
Stay 2 nights at the very least. You need one full day to learn the history, see the pictures and just basically grasp the magnitude of the recent and past history of this place.
You don't just book a room. You are staying on the upper two floors of a genuine castle originally built in the 1400's. For you history buffs - think before Christopher Columbus discovered America. Pete has spent years of his life rebuilding it to its original grandeur and more.
The top floor is the bedroom with a wonderful wood burning fireplace, heater blanketed custom made bed. Just below is the floor with a full kitchen, bathroom and a big comfy couch with coal stove.
Admittedly, we were slightly unimpressed with the castles we visited after staying in Peter's Castle. This unique experience spoiled us!