A beautifully restored Norman castle high above Pembrokeshire Coast National Park. Refurbished as a five-star holiday let, it has six modern rooms encased within the heavy walls. Views are of the Irish Sea, St David's peninsula or wild Welsh countryside. The House Manager is on hand for breakfast, the larder is stocked, and a private chef is ready to rustle up a special evening meal.
Roch Castle, Roch, Haverfordwest, Pembrokeshire, Wales SA62 6AQ (01422 323200; retreatsgroup.com). Weekly rental from £4,000, including breakfast. Sleeps 12.