Llwyn Onn Guest House is in an idyllic setting overlooking the Llwyn Onn Reservoir in the heart of the Brecon Beacons National Park. It has been converted to a high 4 star hotel standard accommodation with 11 en suite bedrooms. The front bedrooms overlook the gardens and the lake whilst the back and ground floor bedrooms have woodland views. There is also private off road parking for our guests. The Llwyn Onn area is ideal for walking and cycling around the reservoir to the nearby Garwnant Forest Centre and the Taff Trail, We are close to Pen y Fan with panoramic views of the countryside in the National Park. Llwyn Onn is situated on the outskirts of Merthyr with access to major towns with Cardiff to the South, Swansea to the West and Brecon to the North. It appeals to both business and leisure. So visit Llwyn Onn Guest House and experience the great outdoors of Wales and its warm hospitality.