Llwyn Onn Guest House

Guesthouse in Merthyr Tydfil

Choose dates to view prices

Sun 23 Nov
Sat 29 Nov
November 2025
23
December 2025
Escape to Llwyn Onn Guest House, where warmth and comfort blend seamlessly. Unwind with a game of billiards or bask in the Welsh charm, all while enjoying free breakfast and multilingual staff assistance.
Excellent

Popular amenities

  • Non-smoking
  • Free parking
  • Internet access

Main amenities (3)

  • WiFi in the lobby
  • Meeting room
  • Multilingual staff
£98
includes taxes & fees
24 Nov - 25 Nov

Room options

Showing 4 of 4 rooms
Standard Single Room, Ensuite, Lake View
Standard Single Room, Ensuite, Lake View
Standard Single Room, Ensuite, Lake View
Standard Single Room, Ensuite, Lake View

Standard Single Room, Ensuite, Lake View

  • Lake view
  • Sleeps 1
  • 1 Double Bed
Executive Twin Room, 2 Single Beds, Ensuite
Executive Twin Room, 2 Single Beds, Ensuite
Executive Twin Room, 2 Single Beds, Ensuite
Executive Twin Room, 2 Single Beds, Ensuite

Executive Twin Room, 2 Single Beds, Ensuite

Exceptional

Highlights

Hairdryer
Wardrobe
  • Sleeps 2
  • 2 Single Beds
Executive Double Room, Ensuite
Executive Double Room, Ensuite
Executive Double Room, Ensuite
Executive Double Room, Ensuite

Executive Double Room, Ensuite

Exceptional

Highlights

Fridge
Private bathroom
Wardrobe
Desk
  • Sleeps 2
  • 1 Double Bed
Double Room, Ensuite (Garden View) | Bathroom
Double Room, Ensuite (Garden View)
Double Room, Ensuite (Garden View) | Bathroom
Double Room, Ensuite (Garden View)

Double Room, Ensuite (Garden View)

Exceptional

Highlights

Private bathroom
Wardrobe
  • Sleeps 2
  • 1 Double Bed

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About the area

Map
Llwyn Onn, Cwmtaf, Merthyr Tydfil, Wales, CF48 2HT

What's nearby

  • Garwnant Visitor Centre - 2 min drive - 2.7 km
  • Brecon Beacons National Park - 3 min drive - 4.1 km
  • Cardiff Castle - 41 min drive - 51.6 km
  • Principality Stadium - 42 min drive - 52.3 km
  • Cardiff Bay - 44 min drive - 53.6 km

Getting around

  • Cardiff International Airport (CWL) - 71 min drive
  • Troed-y-Rhiw Station - 12 min drive
  • Pentre-bach Station - 12 min drive
  • Merthyr Tydfil Station - 13 min drive

Restaurants

  • ‪Mango House - ‬5 min drive
  • ‪McDonald's - ‬6 min drive
  • ‪Red Cow Inn - ‬12 min drive
  • ‪Holvey’s Cafe - ‬8 min drive
  • ‪The Aberglais - ‬8 min drive

About this property

Llwyn Onn Guest House

Llwyn Onn Guest House puts you a short five-minute drive from Brecon Beacons National Park. Freebies such as breakfast and self-parking are added perks, and guests looking to stay active can experience the nearby mountain biking.

At a glance

Hotel size

    • 11 rooms

Arriving/Leaving

    • Check-in start time: 4:00 PM; check-in end time: 8:00 PM
    • Early check-in subject to availability
    • Minimum check-in age – 18
    • Check-out time is 10:30 AM

Special check-in instructions

    • The host will greet guests on arrival

Required at check-in

    • Credit card, debit card or cash deposit required for incidental charges
    • Government-issued photo ID may be required
    • Minimum check-in age is 18

Pets

    • Pets not allowed

Internet

    • WiFi in public areas*

Parking

    • Free on-site self-parking

Other information

    • Smoke-free property
    • No stag or hen parties

Property amenities

Food and drink

  • Free breakfast

What to do

  • Pool table
  • Mountain biking nearby
  • Horse riding nearby
  • Fishing nearby

Working away

  • Meeting room

Services

  • Multilingual staff

Special features

Awards and affiliations

Eco-certified property
This property participates in Green Tourism Programme – a programme that measures the property's impact on one or more of the following: environment, community, cultural heritage and the local economy.

Fee & policy details

Optional extras

  • WiFi is available in public areas for an extra charge

Policies

This property's policy is to refuse certain bookings for the purpose of group events or parties, including pre-wedding stag and hen parties.
This property does not have lifts.
This property accepts credit cards.
Credit cards accepted: Visa, Mastercard, American Express
If you cancel your booking, you'll be subject to the property's cancellation policy. In accordance with UK consumer law, property booking services are not subject to the right of withdrawal.

Also known as

Llwyn Guest House
Llwyn Onn
Llwyn Onn Guest House
Llwyn Onn Guest House Merthyr Tydfil
Llwyn Onn Merthyr Tydfil
Llwyn Onn Guest House Guesthouse Merthyr Tydfil
Llwyn Onn Guest House Guesthouse
Llwyn Onn Guest House Guesthouse Merthyr Tydfil
Llwyn Onn Guest House Guesthouse
Llwyn Onn Guest House Merthyr Tydfil
Guesthouse Llwyn Onn Guest House Merthyr Tydfil
Merthyr Tydfil Llwyn Onn Guest House Guesthouse
Guesthouse Llwyn Onn Guest House
Llwyn Onn House Merthyr Tydfil
Llwyn Onn Merthyr Tydfil
Llwyn Onn Guest House Guesthouse
Llwyn Onn Guest House Merthyr Tydfil
Llwyn Onn Guest House Guesthouse Merthyr Tydfil

Frequently asked questions

Are pets allowed at Llwyn Onn Guest House?

Sorry, pets aren't allowed.

Is parking offered on site at Llwyn Onn Guest House?

Yes, there's free self parking.

What are the check-in and check-out times at Llwyn Onn Guest House?

Check-in start time: 4:00 PM; check-in end time: 8:00 PM. Check-out time is 10:30 AM.

What is there to do at Llwyn Onn Guest House and nearby?

Have fun with nearby activities such as cycling, fishing and horse riding. Additional recreation nearby includes birdwatching.

Have a question?

Get instant answers with AI powered search of property information and reviews.

Llwyn Onn Guest House Reviews

8.8

Excellent

9.0

Cleanliness

8.2

Location

9.0

Staff & service

9.0

Eco-friendliness

9.0

Property conditions & facilities

What guests liked

  • Breakfast was consistently described as delicious, good, and fulfilling with a great selection. (21 reviews)
AI Sparkle IconFrom real guest reviews summarized by AI.

Popular mentions

Service staffRoomBreakfastLocationGuesthouseTrailsBathroomPubWaterfallsScenery

10/10 Exceptional

Great locally run property, staff were very friendly and the breakfast was great, recommend to anybody looking to get away and relax
Jeff, 1-night trip

8/10 Very good

Lovely staff, great quiet location central for pen y fan & the waterfalls. Excellent breakfast, thankyou great overnight stay.
Martyn, 1-night trip

10/10 Exceptional

A must visit in the area

Lovely big house in a lovely area and the staff are so friendly and can't do enough for you. Was my 2nd visit.
Richard, 1-night trip

10/10 Exceptional

Fantastic hospitality, room & food !

Amazing stay for looking around the local area and hills. The room was lovely, the hospitality was great and the food was fantastic. Will definitely be back
Duncan, 2-night trip

8/10 Very good

We liked the self in service, it allowed us to be flexible about arrival times & we could come & go as we wanted Room was a good size & clean. It had everything we needed Breakfast was cooked fresh & staff very friendly & helpful. Guesthouse was in a lovely quiet & pretty area We would definitely stay there again
Jonathan, 1-night trip

10/10 Exceptional

Lovely accommodation, with friendly staff who were very polite and helpful. The room was very tidy and clean, the only con would be the mattress was slightly uncomfortable with old springs. We overlooked that as the property was perfect for us.
Kirsty, 1-night trip

10/10 Exceptional

Fantastic guest house

Amazing food and hospitality, very comfortable and clean room, definitely recommend
Claire, 2-night trip

10/10 Exceptional

This was an amazing place with really friendly and helpful staff, would recommend to anyone
richard, 1-night trip

10/10 Exceptional

Everything is wonderful
Andrii, 1-night trip

10/10 Exceptional

Hospitality excellent. Breakfast was cooked to order, and catered for my husbsnd who is coeliac. Rooms were veey clean.
Nicola, 1-night trip

10/10 Exceptional

Excellent staff, great breakfast, worth a stay!
Ken, 1-night trip

10/10 Exceptional

This is a fabulous B&B. I would recommend to anyone traveling in the area.
Mary, 1-night trip

8/10 Very good

Comfy Stay

We had a lovely stay. The bedroom (number 2) was well fitted, with a comfy bed and a mini fridge which was a great extra. Good breakfast and friendly staff. Would stay again if in area
Michaela, 1-night trip

10/10 Exceptional

The staff and owner were very polite and friendly great place to stay would stay again 👍💯
Philip, 2-night trip

10/10 Exceptional

Would definitely stay again
Carmen, 1-night trip

10/10 Exceptional

Lovely stay!

We really enjoyed our stay - the staff are so friendly and eager to help.
Andrew, 2-night trip

8/10 Very good

Nice spot for a staying exploring the Brecon Beacons. Would stay again.
Bernard, 1-night trip

10/10 Exceptional

Lovely stay, very friendly,helpful staff and charming owner
Frances, 2-night trip

10/10 Exceptional

Lovely B&B.....very friendly host and staff.

Nice clean large room. The fridge was a big bonus. Excellent shower which was much appreciated after a long day walking. We were led to believe from the hotel.com web site that there is Wifi only in public areas but in fact there was wifi all over the the guest house including the rooms. And it was super fast wifi. I was able watched Netflix on my ipad and all the football matches I wanted to watch. Moyra (the owner), is a lovely friendly lady, as her staff. Breakfast was fabulous, continental and cooked what ever you choose or both. We will definitely come back as we have few more walks to complete in the area. Thank you Moyra for a lovley weekend. Haim & Helen
Haim, 3-night trip

10/10 Exceptional

We thoroughly enjoyed our stay, proper old school feel and style that you don’t get any more. Never want to stay in a Travel Lodge again!! The staff were the highlight. Hurraaahhhh for Moira and her 2 lady helpers 🙌 Excellent breakfast. We will definitely stay again. Clare & Kevin Brooks
Clare, 1-night trip

10/10 Exceptional

Fabulous stay in the Brecon Beacons

Absolutely amazing hospitality, wonderful host. Fabulous food. Great location for exploring the stunning countryside of the Brecon Beacons. Homely, comfortable rooms, highly recommend.
Claire, 2-night trip

10/10 Exceptional

Lovely stay

Friendly, quiet and comfortable with a lovely breakfast both mornings
2-night trip

8/10 Very good

Very nice place to stay. Staff is very friendly
Judith, 3-night trip

8/10 Very good

Lovely guest house, spacious rooms. Very good breakfast.
Caroline, 4-night trip

10/10 Exceptional

Great property with really nice rooms. The staff are so friendly and amazing. Great place to stay away from the busy town and with easy access to the popular hiking trails of the beacons
Nawaaz, 3-night trip