Hotels
Ballyvaughan
We booked our rooms here for the wedding (checking in on the 14th and out on the 17th): https://www.gregans.ie/?gclid=CjwKCAiA6vXwBRBKEiwAYE7iSyXIuGDThpmVesEKpLoWsqTwLDzYUwjviLpefrimUYZYLWWB6SK8EhoCeJ0QAvD_BwE They only have a total of 21 rooms so if you're wanting to book here, I suggest doing it soon! I also booked one extra room, so if they do book up and you want to stay here, let me know and if it's still available I can transfer it to you.
I also know a few people booked here: https://www.thewildatlanticlodge.com
Airbnb has cute places, too!
Ballyvaughan is a pretty small place so anywhere you find in the area should be close. I do recommend checking out the distance from Gregan's castle to the hotel you choose because we will provide transportation from Gregan's castle to and from the wedding venue and the reception.
Here's a few with distances:
2.4 miles from Gregan's Castle: http://cappabhaile.com
3.3 miles from Gregan's Castle: http://www.hylandsburren.com
3.5 miles from Gregan's Castle: www.tripadvisor.com/Hotel_Review-g212514-d8518692-Reviews-Burren_Atlantic_Hotel_Holiday_Village-Ballyvaughan_The_Burren_County_Clare.html
We are staying here in Dublin (checking in on the 11th and out on the 14th) www.marriott.com/hotels/travel/dubal-aloft-dublin-city/?scid=bb1a189a-fec3-4d19-a255-54ba596febe2