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Llwyn Onn Guest House

4.0 star property
Guesthouse with free breakfast, near Brecon Beacons National Park

Choose dates to view prices

Llwyn Onn Guest House combines comfort with genuine Welsh hospitality. Travelers can enjoy a game of billiards after their free breakfast or simply relax in the warm atmosphere. The multilingual staff helps visitors feel right at home throughout their stay.

Reviews

8.8 out of 10
Excellent

Popular amenities

  • Parking included
  • Business services
The current price is ￥16,609
￥19,931 total
includes taxes & fees
Nov 17 - Nov 18

Room options

Available filters for rooms
Showing 4 of 4 rooms

View all photos for 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

View all photos for Executive Twin Room, 2 Twin Beds, Ensuite

Executive Twin Room, 2 Twin Beds, Ensuite

Executive Twin Room, 2 Twin Beds, Ensuite

9.4 out of 10
Exceptional
(3 reviews)

Highlights

Hair dryer
Wardrobe or closet
  • Sleeps 2
  • 2 Twin Beds

View all photos for Executive Double Room, Ensuite

Executive Double Room, Ensuite

Executive Double Room, Ensuite

9.6 out of 10
Exceptional
(10 reviews)

Highlights

Refrigerator
Private bathroom
Wardrobe or closet
Desk
  • Sleeps 2
  • 1 Double Bed

View all photos for Double Room, Ensuite (Garden View)

Double Room, Ensuite (Garden View)

Double Room, Ensuite (Garden View)

10.0 out of 10
Exceptional
(4 reviews)

Highlights

Private bathroom
Wardrobe or closet
  • Sleeps 2
  • 1 Double Bed
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About the neighborhood

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

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

  • Troed-y-Rhiw Station - 12 min drive
  • Cardiff International Airport (CWL) - 71 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

Upscale guesthouse near Brecon Beacons National Park
Llwyn Onn Guest House provides free breakfast and more. Stay connected with WiFi in public areas (surcharge).
Other perks include:
  • Free self parking
  • 1 meeting room, a billiards/pool table, and smoke-free premises
  • Multilingual staff

Awards and affiliations

Eco-Certified Property
This property participates in Green Tourism Program, a program that measures the property's impact on one or more of the following: environment, community, cultural-heritage, the local economy.

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8.4 out of 10, Very Good, 527 reviews
The price is ￥11,862
￥14,235 total
includes taxes & fees
Nov 16 - Nov 17
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Property amenities

Internet

  • Available in some public areas: WiFi (surcharge)

Parking and transportation

  • Free self parking on site

Food and drink

  • Free breakfast available

Things to do

  • Billiards/pool table

Guest services

  • Multilingual staff
  • No housekeeping service

Business services

  • Meeting room

Accessibility

  • No elevator

More

  • Smoking not allowed

Policies

Check-in

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

Check-out before 10:30 AM

Special check-in instructions

The host will greet guests on arrival

Access methods

Host will greet you

Pets

Pets not allowed

Children and extra beds

Children are welcome

Property payment types

Important information

You need to know

Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card, debit card, or cash deposit may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
This property accepts credit cards

We should mention

This property does not have elevators
This property's policy is to refuse certain bookings for the purpose of group events or parties, including pre-wedding stag/bachelor and hen/bachelorette parties

Property is 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

Is Llwyn Onn Guest House pet-friendly?

No, pets are not allowed at this property.

How much does it cost to stay at Llwyn Onn Guest House?

As of Nov 15, 2025, prices found for a 1-night stay for 2 adults at Llwyn Onn Guest House on Nov 17, 2025 start from ￥16,609, excluding taxes and fees. This price is based on the lowest nightly price found in the last 24 hours for stays in the next 30 days. Prices are subject to change. Choose your dates for more accurate prices.

How much is parking?

Self parking is free at this property.

What time is check-in at Llwyn Onn Guest House?

Check-in start time: 4:00 PM; Check-in end time: 8:00 PM.

What time is check-out at Llwyn Onn Guest House?

Check-out is at 10:30 AM.

Where is Llwyn Onn Guest House located?

Situated in Merthyr Tydfil, this guesthouse is 1.7 mi (2.7 km) from Garwnant Visitor Centre and 1.9 mi (3.1 km) from Brecon Beacons National Park. Cyfarthfa Park and Museum and Joseph Parry's Cottage are also within 6 mi (10 km).

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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
Rating 10 - Excellent. 131 out of 232 reviews
Rating 8 - Good. 71 out of 232 reviews
Rating 6 - Okay. 20 out of 232 reviews
Rating 4 - Poor. 7 out of 232 reviews
Rating 2 - Terrible. 3 out of 232 reviews

Reviews

10/10 Excellent

Richard

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

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.
Stayed 1 night in Jul 2025

10/10 Excellent

Andrew

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Lovely stay!

We really enjoyed our stay - the staff are so friendly and eager to help.
Stayed 2 nights in Aug 2023

8/10 Good

Bernard

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Nice spot for a staying exploring the Brecon Beacons. Would stay again.
Stayed 1 night in Apr 2023

10/10 Excellent

Claire

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

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.
Stayed 2 nights in Oct 2024

8/10 Good

Caroline

Lovely guest house, spacious rooms. Very good breakfast.
Stayed 4 nights in Aug 2024

10/10 Excellent

Sarah

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Excellent stay at Llwyn Onn

Very clean and comfortable with excellent service. Would highly recommend this establishment.
Stayed 3 nights in Sep 2022

10/10 Excellent

Rob

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Nothing to dislike -everything was superb everybody made us so welcome ,lovely facilities ,will definitely book again
Stayed 2 nights in Aug 2024

10/10 Excellent

Maureen

Liked: Cleanliness, staff & service, property conditions & facilities
Lovely home. The owner was very friendly, greeted everyone at breakfast and as they were checking out.
Stayed 1 night in May 2023

10/10 Excellent

Colleen

2 night stay visiting family

We had a lovely 2 night stay. The owner Moyra and her girls were excellent, very welcoming and friendly. Breakfast was absolutely lovely. Would highly recommend and will back very soon. Thank you Moyra and staff 👍
Stayed 2 nights in Feb 2024

10/10 Excellent

William

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Everything that was said on the comments was true owner couldn’t do more for us, extremely helpful service very good, rooms were good and spacious, with a good knowledge of the area we saw what we went to see. Excellent recommendation.
Stayed 2 nights in Jul 2023

10/10 Excellent

Paula

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Lovely Llwnn Onn guest house.

Visiting Merthyr to visit friends our our way home from a road trip around England, Scotland & Wales. Large comfortable rooms, very friendly staff, great location. 200 year old house, well cared for, modernised and equipped to a very high standard. My Mother had poor mobility and was accommodated very well with a spacious ground floor room. Our room on the first floor was very comfortable too. Full size and very deep bath. Plenty of pillows and towels available, no need to ask for anything. Lovely communal areas if you wanted to sit with others. Breakfast was fantastic, plenty and good selection. Thank you Moira and your team.
Stayed 1 night in Jun 2023

10/10 Excellent

Kirsty

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
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.
Stayed 1 night in Aug 2025

8/10 Good

Yann

Liked: Cleanliness, property conditions & facilities, room comfort

A welcome in the hillside.

A lovely old-fashioned hotel in a stunning setting. Comfortable, clean, cozy. On arrival we were surprised to find nobody there even though we'd waited for reception opening time. Our keys were in a plastic bag pinned to a cork board. Explanations were confusing. Breakfast was an epic adventure. The gas stove had broken down and a tremendous effort was made by staff to provide us with a very good Welsh breakfast that was well worth waiting nearly an hour for. The lady who waited on us was very friendly and, at our request, talked about the region and how to get to our next destination. I'd like to thank her for all her kindness. I was a little sad to hear the owner, I presume, telling her off for spending so much time talking. We really think this personal touch by staff is what distinguishes a good guest house like 'Llwyn Onn' from bland uninteresting hotels. Please don t discourage your staff from being so welcoming.
Stayed 1 night in Jul 2025

10/10 Excellent

Jeff

Liked: Cleanliness, amenities, property conditions & facilities
Great locally run property, staff were very friendly and the breakfast was great, recommend to anybody looking to get away and relax
Stayed 1 night in Jun 2025

8/10 Good

Martyn

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Lovely staff, great quiet location central for pen y fan & the waterfalls. Excellent breakfast, thankyou great overnight stay.
Stayed 1 night in Jul 2025

8/10 Good

Jonathan

Liked: Amenities
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
Stayed 1 night in Jul 2025

10/10 Excellent

Martin

Liked: Cleanliness, amenities, property conditions & facilities
Ruhig aber trotzdem Central im National Park gelegen. Sehr freundliches Personal.
Stayed 2 nights in Jun 2025

10/10 Excellent

Duncan

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

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
Stayed 2 nights in Jun 2025

10/10 Excellent

Clare

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
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
Stayed 1 night in Jun 2025

10/10 Excellent

Andrii

Liked: Cleanliness, amenities, property conditions & facilities
Everything is wonderful
Stayed 1 night in May 2025

4/10 Poor

Peter

Liked: Cleanliness, property conditions & facilities, room comfort

Lack of hot water

Day before had phone call from owner informing me that the room we were allocated has a toilet problem and we might have to be re allocated a downstairs room if the problem not sorted, luckily it was. Shower and sink in room kept loosing water and were not warm. Mentioned to owner the following morning and was told they would be sorted. Arrived back after day out to a written note on how to keep water running and warm, but it still wasn’t warm and was water was stopping mid use. Mentioned again at breakfast to owner for any other guests. Owner mentioned that staff levels were down. Breakfast was really nice and fulfilling, staff were very friendly and chatty.
Stayed 2 nights in May 2025

10/10 Excellent

Nicola

Liked: Staff & service, amenities, property conditions & facilities
Hospitality excellent. Breakfast was cooked to order, and catered for my husbsnd who is coeliac. Rooms were veey clean.
Stayed 1 night in May 2025

10/10 Excellent

Waheed

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Lovely welcoming folks, had a great stay. Perfectly located for all that we wanted to see and do. Thank you!
Stayed 3 nights in Apr 2025

10/10 Excellent

Claire

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Fantastic guest house

Amazing food and hospitality, very comfortable and clean room, definitely recommend
Stayed 2 nights in Feb 2025

8/10 Good

Michaela

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

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
Stayed 1 night in Feb 2025