Inside Killarney's Great Southern: What does it take to transform a hotel from four-star to five?

The team at the newly awarded The Great Southern in Killarney tell Gemma Fullam why making guests feel seen is the secret to five-star hospitality

Long-serving staff member Kathleen Bouiyan makes final checks before service in the Arbour restaurant at The Great Southern Hotel in Killarney.

In October, mathematicians across the globe wept. They cried on podcasts, in interviews and on social media platforms, with one boffin admitting he’d bawled so loudly he’d woken up his child.

Why were they all so upset?