The Gliffaes Country House Hotel is located in Crickhowell, Wales, in the Brecon Beacons National Park, 10 miles from Abergavenny town and train station, and 20 miles from annual literary festival at Hay on Wye. Hotel Features. This family run country house hotel is set in 35 acres of tree lined grounds overlooking the River Usk. Guests can ask the concierge to help organise sightseeing and book tickets to shows attractions. Practical amenities include complimentary parking, room service, and dry cleaning. The restaurant specialises in French cooking made using fresh local ingredients.