Set across a terrace of restored Georgian townhouses opposite Government Buildings, The Merrion is Dublin’s most refined address. It holds one of Ireland’s finest private art collections, a serene spa with an eighteen-metre pool, and the two-Michelin-starred Restaurant Patrick Guilbaud next door. The Art Tea, where cakes are inspired by the paintings on the walls, is a lovely indulgence. Book the garden-view rooms for the quietest nights.