Can thoroughly recommend The Heritage at Killenard.
Had our client golf day there in June, so I took it upon myself to organise our clients for their golf and then once they were happy out golfing away, treated myself to a SPA day. I think it cost me over €300 just for the treatments, but it was well worth it for sheer luxury. Finished about six in the spa, got changed and went for dinner almost floating on air I was that chilled out.
Usually, I get stressed out on our client day, as somebody is late/fails to turn up/does not want to play with such a body, and then someone gets hammered at the dinner and insults someone else, but last year just floated through the whole thing.
Spoke to somebody who has been to Lyrath and recommends Heritage over it. They use Pevonia (body oil is beautiful) products in Heritage whereas Lyrath uses H20.