13/10/2026
A little appreciation post for our General Manager Marie Therese Costello.
For Marie Therese, hospitality is more than a profession. It is a lifelong passion.
Having studied at César Ritz Colleges in Switzerland and Shannon College of Hotel Management, Marie Therese has built an international career spanning Disney and the Middle East, bringing Glin Castle a wealth of experience and exceptional service standards.
Known for her genuine warmth, intuitive understanding of people and exceptional attention to detail, Marie Therese believes that true luxury lies in making every guest feel special.
With an extensive network of trusted contacts and deep knowledge of Ireland's Midwest and its hidden gems, she delights in creating unique, personalised experiences that exceed expectations.
As guests have so beautifully expressed:
“You met us exactly where we were and somehow took us higher and deeper.”
“Thank you for a trip of a lifetime, filled with fun and memories, which you brought to life with your competence, grace and spirit.”
“Thank you for giving us all a home-away-from-home experience that none of us will soon forget.”
For Marie Therese, the greatest reward is creating memories that last a lifetime.
“I love what I do, and together with my wonderful team, I take pride in creating those thoughtful, personal touches that make every stay at Glin Castle truly unforgettable.”
📸 Mike Mulcaire Photography