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Llwyn Onn Guest House

Property class: 4

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Photo gallery for Llwyn Onn Guest House

A two-story white building with a stone staircase leading to a covered patio area. - Llwyn Onn Guest House (Merthyr Tydfil)
A neatly made bed with a patterned bedspread, two bedside lamps, a framed picture on the wall, and a wicker chair. - Llwyn Onn Guest House (Merthyr Tydfil)
A living room with a sofa, a coffee table, and a television. - Llwyn Onn Guest House (Merthyr Tydfil)
A two-story white building with a stone staircase leading to a porch. - Llwyn Onn Guest House (Merthyr Tydfil)
A well-maintained garden with a neatly trimmed lawn, a variety of flowering plants, and a wooden fence. - Llwyn Onn Guest House (Merthyr Tydfil)
Llwyn Onn Guest House provides free continental breakfast and more. Stay connected with WiFi in public areas (surcharge).

Reviews

8.8 out of 10
Excellent

Popular amenities

  • Parking included
  • Business services

Off-peak, on budget: 30% or more off select hotels in our fall sale

Skip the crowds, keep the savings. AARP members save more after Labor Day. Book by Oct 7, 2026.

Room options

Available filters for rooms
Showing 4 of 4 rooms

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

A bedroom with a bed, nightstands, a wooden wardrobe, a chair, and a window with curtains.

Standard Single Room, Ensuite, Lake View

  • Lake view
  • Sleeps 1
  • 1 Double Bed

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

A room with two single beds, a nightstand, a lamp, and a window with curtains.

Executive Twin Room, 2 Twin Beds, Ensuite

9.6 out of 10
Exceptional
(4 reviews)
  • Sleeps 2
  • 2 Twin Beds

View all photos for Executive Double Room, Ensuite

A neatly made bed with white linens and towels arranged in the center, flanked by two wall-mounted lamps.

Executive Double Room, Ensuite

9.8 out of 10
Exceptional
(11 reviews)
  • 1 bedroom
  • Sleeps 2
  • 1 Double Bed

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

A bedroom with two single beds, a wooden nightstand with a lamp, a wooden desk with a chair, and a window with curtains.

Double Room, Ensuite (Garden View)

10.0 out of 10
Exceptional
(4 reviews)
  • 1 bedroom
  • Sleeps 2
  • 1 Double Bed

About the neighborhood

Merthyr Tydfil is home to Llwyn Onn Guest House. The area's natural beauty can be seen at Brecon Beacons National Park and Craig Cerrig Gleisiad a Fan Frynych National Nature Reserve, while Joseph Parry's Cottage and Brecon Mountain Railway are cultural highlights. Merthyr Tydfil Leisure Centre and Aberdare Swimming Pool are also worth visiting. Discover the area's water adventures with fishing nearby, or enjoy the great outdoors with mountain biking, cycling, and horse riding. Visit our Merthyr Tydfil travel guide
View more Guest Houses in Merthyr Tydfil
Map
Llwyn Onn, Cwmtaf, Merthyr Tydfil, Wales, CF48 2HT

What's nearby

  • A waterfall cascading into a calm pool surrounded by lush greenery and rocky cliffs.
    Brecon Beacons National Park
    1 min walk - 0.0 miles
  • A waterfront cityscape at dusk with a prominent Ferris wheel, a clock tower, and a calm harbor reflecting the sunset.
    Cardiff Bay
    52 min drive - 42.0 miles
  • An ornate hall with high wooden ceilings, intricate murals, and a central table with a red cloth.
    Cardiff Castle
    53 min drive - 32.7 miles
  • A modern stadium with a distinctive sail-like structure and a glass facade.
    Principality Stadium
    57 min drive - 33.9 miles
  • Garwnant Visitor Centre
    2 min drive - 1.7 miles

Getting around

  • Pentre-bach Station
    12 min drive
  • Cardiff International Airport (CWL)
    71 min drive

Restaurants

  • Julie’s Deli & Desserts
    8 min drive
  • McDonald's
    6 min drive
  • Costa Coffee
    6 min drive
  • KFC
    5 min drive
  • The Old Barn Tea Room
    18 min drive

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  • Hot tub
  • Breakfast included
  • Spa
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Property amenities

Internet

  • Available in some public areas: WiFi (surcharge)

Parking and transportation

  • Free self parking on site

Things to do

  • Billiards/pool table

Family friendly

  • High chair

Guest services

  • Multilingual staff
  • No housekeeping service

Business services

  • Meeting room

Accessibility

  • If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
  • No elevator
  • Well-lit path to entrance
  • Wheelchair-accessible registration desk

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

Information provided by the property may be translated using automated translation tools

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
Safety features at this property include a fire extinguisher

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

Frequently asked questions

Is Llwyn Onn Guest House pet-friendly?

No, pets are not allowed at this property.

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

Property conditions & facilities
Rating 10 - Excellent. 138 out of 240 reviews
Rating 8 - Good. 72 out of 240 reviews
Rating 6 - Okay. 20 out of 240 reviews
Rating 4 - Poor. 7 out of 240 reviews
Rating 2 - Terrible. 3 out of 240 reviews

Reviews

Verified review

8/10 Good

Kathryn

Liked: Staff & service, property conditions & facilities
Very friendly staff, excellent breakfast.
Stayed 1 night in Jun 2026
Verified review

10/10 Excellent

Matthew

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Clean, well presented, friendly helpful staff and a decent breakfast! Couldn't ask for any more, was a great place to stay. We only stayed one night but would be happy to return and stay longer! Highly recommended
Stayed 1 night in Jun 2026
Verified review

10/10 Excellent

Jeannette

Liked: Cleanliness, staff & service, property conditions & facilities
Lovely fresh cooked breakfast, lovely staff
Stayed 1 night in Apr 2026
Verified review

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
Verified review

10/10 Excellent

Duncan

Liked: Cleanliness, staff & service, amenities
Room was clean and fantastic with everything we could need. The owner and hosts were as helpful, friendly and kind as always. Great breakfast selection.
Stayed 2 nights in Jan 2026
Verified review

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
Verified review

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
Verified review

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
Verified review

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
Verified review

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
Verified review

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
Verified review

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
Verified review

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
Verified review

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
Verified review

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
Verified review

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
Verified review

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
Verified review

8/10 Good

Caroline

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

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
Verified review

10/10 Excellent

Irene

Liked: Cleanliness, staff & service, property conditions & facilities
Very comfortable beds, clean and well decorated rooms everything been thought of even small fridge. Friendly staff and owner
Stayed 2 nights in Apr 2024
Verified review

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
Verified review

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
Verified review

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
Verified review

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
Verified review

10/10 Excellent

stephen

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

you will not want to stay anywhere else.

this was our 4th visit to this B&B, sadly it was fully booked earlier in the year and we stayed at a Travelodge,( which we would rather not do again.) this B&B is always spotlessly clean ,staff are beyond lovely, we stay here to take the strain of family having to put us up when visiting .
Stayed 2 nights in Nov 2023