Aghadoe Heights Hotel & Spa

A 1960s modernist block overlooking the Lakes of Killarney, which puts it decisively outside the local castle-and-ivy playbook. The 73-room hotel leans into its era with design-forward interiors, but comfort keeps it from tipping into look-don't-touch territory. Most rooms face full-length windows aimed at the mountains. The stand-alone spa is a serious operation, with a 14-meter pool alongside the treatments, and the team can arrange golf or a fishing trip if the hills start calling.