All hotels in Merthyr Tydfil, Wales, United Kingdom
1 room, 2 adults
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Llwyn Onn Guest House, Merthyr Tydfil

This property has received its official star rating from Visit Wales.
Llwyn Onn, Cwmtaf, Merthyr Tydfil, Wales, CF48 2HT, United Kingdom, ‏‎800-491-6126
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Merthyr Tydfil upscale guesthouse with restaurant

  • Free parking

Main amenities

  • 11 smoke-free guestrooms
  • Restaurant
  • Meeting rooms
  • Picnic area
  • Barbecue grills

What’s around

  • Cyfarthfa Park and Museum (3.6 mi / 5.7 km)
  • Brecon Beacons National Park (4.6 mi / 7.4 km)
  • Brecon Golf Club (13.5 mi / 21.8 km)
Llwyn Onn Guest House is a 200 year old farmhouse converted and modernised to a 4 star hotel standard in an idyllic setting overlooking the Llwyn Onn Reservoir in the heart of the Brecon Beacons 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. All rooms are en-suite with Satellite TV and hospitality tray, the majority of rooms also having fridges. A traditional Welsh Breakfast is served in our dining room. We also offer our guests the use of a communal lounge, offering a peaceful retreat at the end of the day. When staying at Llwyn Onn, using the leisure facilities, including an indoor swimming pool and health spa at the nearby JJB Sports complex is free of charge. NO ARRIVALS AFTER 9PM
Llwyn Onn Guest House is in an idyllic setting overlooking the Llwyn Onn Reservoir in the heart of the Brecon Beacons National Park. Rooms have lake, garden or woodland views.
Good3.9 / 5
  • The hotel staff were very friendly, the room was as I'd expect - clean and nice and warm!Nov 14, 2014
  • Large rooms with cute decor. Modern bathroom had a towel warmer! Hot chocolate and…Jan 21, 2014
See all 48 reviews
From 127 reviewsTripAdvisor Traveller Rating

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Hotel Info: ‎866-539-8117‎

from $76
  • En-suite- Single Occ
  • Double Room
  • Superior Twin Room, 2 Single Beds, Ensuite
  • Executive Double Room, Ensuite
  • Superior Room, 1 Double Bed, Ensuite
  • Executive Twin Room, 2 Single Beds, Ensuite
  • Triple Room, Ensuite

At a glance

Key facts

Hotel size

  • This hotel has 11 rooms
  • This hotel is arranged over 2 floors


  • Check-in time 5 PM-9 PM
  • Check-out time is 10:30 AM

Required at check in

  • Credit card or cash deposit required

  • Government-issued photo ID required

Travelling with others


  • No pets or service animals allowed



  • Free self parking

Other information

  • Smoke-free property

In the hotel

Food and drink
  • Restaurant
  • Barbeque grills
Working away
  • Meeting rooms
  • Picnic area

In the room

Home comforts
  • Coffee/tea maker
Be entertained
  • Satellite TV channels
Stay connected
  • Desk
Food and drink
  • Refrigerator

Llwyn Onn Guest House, Merthyr Tydfil

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