A 4-star B&B, Llwyn Onn Guest House sits on the outskirts of Merthyr Tydfil overlooking Llwyn Onn reservoir and the Brecon Beacons National Park. The 11 spacious en-suite guest rooms have views over either woodland or the lake and gardens. Each is individually furnished, includes satellite TV and hospitality tray plus fridge in most rooms. Traditional Welsh breakfasts are freshly cooked to order each morning. The surrounding countryside provides many opportunities for scenic walks, cycling and other outdoor pursuits.