Guests can dine at the on-site bistro, which serves modern dishes and fine wines in a Midiaeval atmosphere complete with chandeliers and traditional pewter goblets. The casual, contemporary pub is the sort of place a dashing young knight might be found practicing the finer points of chivalry while downing a pint of stout; the bar is more refined, a place for the graduated knight. Conference rooms cater for meetings of up to 500 people and come equipped with the latest audio-visual equipment. The concierge can assist with booking tours and restaurants and can also advise on the area's best attractions. Other practical amenities include complimentary parking and a currency exchange service.

The 111 guestrooms are decorated in rich greens and oranges with dark wood furnishings and feature high-speed Internet access, televisions with pay movies, tea/coffee making facilities, telephones and complimentary toiletries.

Steeped in Irish history and dating back to 1172, the Clontarf Castle Hotel offers guests all the charm and splendour of a royal experience.