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Llwyn Onn Guest House

4.0 star property
Eco-certified guesthouse in Merthyr Tydfil with free breakfast

Choose dates to view prices

Photo gallery for Llwyn Onn Guest House

Exterior
Lounge
Miscellaneous
Exterior
Exterior
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 HK$860
HK$1,032 total
includes taxes & fees
10 Sept - 11 Sept

Room options

Check availability for these dates

Tonight

Sep 9 - Sep 10
Check availability for tonight Sep 9 - Sep 10

Tomorrow

Sep 10 - Sep 11
Check availability for tomorrow Sep 10 - Sep 11
Available filters for rooms
Showing 4 of 4 rooms

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

Room

Double Room, Ensuite (Garden View)

10.0 out of 10
Exceptional
(4 reviews)

Highlights

Private bathroom
Wardrobe
  • Sleeps 2
  • 1 Double Bed

View all photos for Executive Double Room, Ensuite

Room

Executive Double Room, Ensuite

9.6 out of 10
Exceptional
(10 reviews)

Highlights

Fridge
Private bathroom
Wardrobe
Desk
  • Sleeps 2
  • 1 Double Bed

View all photos for Standard Single Room, Ensuite, Lake View

Room

Standard Single Room, Ensuite, Lake View

  • Lake view
  • Sleeps 1
  • 1 Double Bed

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

Room

Executive Twin Room, 2 Single Beds, Ensuite

9.4 out of 10
Exceptional
(3 reviews)

Highlights

Hairdryer
Wardrobe
  • Sleeps 2
  • 2 Twin Beds
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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
  • Brecon Mountain Railway - 9 min drive - 10.4 km
  • BikePark Wales - 13 min drive - 14.2 km
  • Penderyn Distillery - 15 min drive - 19.1 km

Getting around

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

Restaurants

  • ‪McDonald's - ‬6 min drive
  • ‪Holvey’s Cafe - ‬8 min drive
  • ‪Mango House - ‬5 min drive
  • ‪The Aberglais - ‬8 min drive
  • ‪Costa Coffee - ‬6 min drive

About this property

Llwyn Onn Guest House

Upscale eco-certified guest house 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
  • A billiards/pool table, multilingual staff and 1 meeting room
  • Smoke-free property

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.

Property amenities

Internet

  • Available in some public areas: WiFi (surcharge)

Parking and transport

  • 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 lift

More

  • Smoke-free property

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

Payment types at the property

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 any lifts
This property's policy is to refuse certain bookings for the purpose of group events or parties, including stag and hen parties

Property is also known as

Llwyn Onn Guest House Merthyr Tydfil
Llwyn Onn Guest House
Llwyn Onn Merthyr Tydfil
Llwyn Onn
Llwyn Onn Guest House Guesthouse Merthyr Tydfil
Llwyn Onn Guest House Guesthouse
Llwyn Onn House Merthyr Tydfi
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 9 Sept 2025, prices found for a 1-night stay for 2 adults at Llwyn Onn Guest House on 10 Sept 2025 start from HK$860.32, 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 at Llwyn Onn Guest House?

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?

Checkout is at 10:30 AM.

Where is Llwyn Onn Guest House located?

Situated in Merthyr Tydfil, this eco-certified 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 miles (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 231 reviews
Rating 8 - Good. 71 out of 231 reviews
Rating 6 - Okay. 19 out of 231 reviews
Rating 4 - Poor. 7 out of 231 reviews
Rating 2 - Terrible. 3 out of 231 reviews

Reviews

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

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

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

10/10 Excellent

Andrii

Liked: Cleanliness, amenities, property conditions & facilities
Everything is wonderful
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

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

richard

Liked: Cleanliness, staff & service, property conditions & facilities
This was an amazing place with really friendly and helpful staff, would recommend to anyone
Stayed 1 night in Jan 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

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

10/10 Excellent

Philip

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The staff and owner were very polite and friendly great place to stay would stay again 👍💯
Stayed 2 nights in Jun 2024

10/10 Excellent

Pete

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

Great

Great stay in a large room with comfortable bed. Breakfast was good. Relaxed atmosphere with friendly pleasant staff. We would happily stay here again.
Stayed 3 nights in Oct 2024

10/10 Excellent

Frances

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Lovely stay, very friendly,helpful staff and charming owner
Stayed 2 nights in Aug 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

10/10 Excellent

Carmen

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Would definitely stay again
Stayed 1 night in Oct 2023

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

Mary

Liked: Cleanliness, staff & service, property conditions & facilities
This is a fabulous B&B. I would recommend to anyone traveling in the area.
Stayed 1 night in Oct 2023

10/10 Excellent

Verified traveller

Liked: Cleanliness, property conditions & facilities, room comfort

Lovely stay

Friendly, quiet and comfortable with a lovely breakfast both mornings
Stayed 2 nights in Apr 2023

8/10 Good

Judith

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Very nice place to stay. Staff is very friendly
Stayed 3 nights in Feb 2023

10/10 Excellent

Nawaaz

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
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
Stayed 3 nights in Mar 2024

10/10 Excellent

Graham

Liked: Cleanliness, staff & service, property conditions & facilities
Fantastic location, plenty of parking, very attentive and lovely polite owner and staff,rooms were spotless and clean, lovely cooked breakfast, and the downstairs rooms being wheel chair accessable around the room, both sides of the bed and bathroom none of which was any trouble, would definitely visit again, thankyou for your warm welcome to you all.
Stayed 1 night in Aug 2024

10/10 Excellent

Brian

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Very nice guest house well maintained and run
Stayed 2 nights in Jul 2023

10/10 Excellent

Tammi

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

wonderful Brecon Beacons stay

Great stay - property was easy to find and very private, room was very comfortable and breakfast cooked to order as well as cold buffet was generous and delicious. We stayed here before riding the Brecon Beacons Railway and enjoyed a quiet evening and warm hospitality of our hostess.
Stayed 1 night in Sep 2023