What is the check-in and check-out policy at Llwyn Onn Guest House?
Check-in is from 16:00 and check-out is by 10:30.
39 photos
Llwyn Onn Guest House, Merthyr Tydfil
105US$
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Key details
About the Hotel
Llwyn Onn,
Merthyr Tydfil,
United Kingdom,
CF48 2HT,
Mid Glamorgan
- Close to the Llwyn-on Reservoir
Perfect
9.0
9.5
4.6
4.7
Location
Llwyn Onn Guest House is situated near the scenic
Accommodations
Each room at Llwyn Onn Guest House features
Dining
Guests can start their day with a
Outdoor Activities
Llwyn Onn Guest House serves as a gateway to numerous outdoor activities including
Amenities
The guest house provides
Highlights
Location: Near Brecon Beacons National Park
Accommodations: En-suite facilities in every room
Dining: Hearty breakfast with local ingredients
Outdoor Activities: Hiking and cycling in stunning landscapes
Must-do experiences
- Hike the stunning Taf Fechan Forest for breathtaking views.
- Indulge in a traditional Welsh cawl at The Brewhouse.
- Visit Cyfarthfa Castle for history and beautiful gardens.
- Discover the Merthyr Tydfil Heritage Centre for local culture.
- Explore the vibrant Merthyr Market for unique local goods.
View all
Select your room type
Llwyn Onn Guest House offers a variety of rooms including double rooms, family rooms, and suites with breakfast, free cancelations, and special deals
Double Room Garden View
2 persons
220 sq. feet
1 Double bed
Shower
Heating
room details
Executive Twin Room
2 persons
220 sq. feet
2 Single beds
Shower
Heating
room details
Executive Double Room
2 persons
220 sq. feet
1 Double bed
Shower
Heating
room details
Price and Room Availability Calendar
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Facilities
Llwyn Onn Guest House offers amenities for your comfortable stay and unforgettable experiences
General
- No smoking on site
- Parking
- No pets allowed
- Rooms/ Facilities for disabled
- Fire extinguishers
Sports & Fitness
- Canoeing
- Hiking
- Horseback riding
- Cycling
- Golf course
- Fishing
Guest Parking
- Electric kettle
Business
- Meeting/ Banquet facilities
- Fax/Photocopying
Children
- Cots
- Board games
Spa & Leisure
- Garden area
- Leisure/ TV room
Room features
- Free Wi-Fi in rooms
- Heating
- Sitting area
- Patio
- Terrace
- Garden furniture
- Tea and coffee facilities
- Ironing facilities
Bathroom
- Free toiletries
Self-catering
- Electric kettle
Media
- Flat-screen TV
Room decor
- Carpeted floor
Show more
Llwyn Onn Guest House Location
Llwyn Onn,
Merthyr Tydfil,
United Kingdom,
CF48 2HT,
Mid Glamorgan
Map view
Llwyn Onn,
Merthyr Tydfil,
United Kingdom,
CF48 2HT,
Mid Glamorgan
City landmarks
Landmark
Llwyn-on Reservoir
2600 ft
Landmark
Merthyr Cilsanws Golf Club
2.2
mi
Train Station
Brecon Mountain Railway
3.1
mi
Castle
Cyfarthfa Castle
3.1
mi
Castle
Morlais Castle
2.6
mi
Bridge
Pontsarn Viaduct
2.3
mi
Landmark
Taf Fechan Nature Reserve
2.3
mi
Church
St John's Church
2.5
mi
Golf Course
Morlais Castle Golf Club
2.9
mi
Landmark
Brecon Mountain Railway Co
3.0
mi
Landmark
Pontsticill Reservoir
3.1
mi
Landmark
St. Lukes Church
3.0
mi
Landmark
Joseph Parry's Cottage
3.6
mi
Landmark
Redhouse
4.0
mi
Bridge
Cefn Coed Viaduct
3.9
mi
Nearby
Llwyn-on Reservoir
2600 ft
Explore Merthyr Tydfil
Explore Cwmtaf's Exciting Offerings
Llwyn-on Reservoir
10 minutes' walk
Beautiful landscaped reservoir ideal for a scenic stroll, photography, and birdwatching.
Morlais Castle
10 minutes' drive
Ruins of a historic castle offering panoramic views, perfect for history buffs and photography.
Cyfarthfa Castle
15 minutes' drive
Victorian-era castle with a museum and beautiful gardens, ideal for a family outing.
Brecon Mountain Railway
15 minutes' drive
Scenic steam railway ride through the Brecon Beacons, providing a unique view of the landscape.
Redhouse
15 minutes' drive
Creative arts centre hosting live performances and community events, family-friendly venue with varied programming.
Getting around
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Property information and rules
Check-in
from 16:00-20:00
Check-out
from 08:00-10:00
Guest Parking
Private parking is possible on site for free.
Internet
Wireless internet is available in the hotel rooms for free.
Breakfast
At the hotel Llwyn Onn Guest House guests are invited to a full breakfast served for free.
Children & extra beds
Maximum capacity of extra beds in a room is 1.
Pets
Pets are not allowed.
Number of rooms:
7
Reviews and Ratings
Feedback about Llwyn Onn Guest House from previous guests about their experience.
Guest reviewsbased on 251 reviews
Riley from Australia
Single
Double Room Garden View
3 nights in October 2025
|
Reviewed: January 18, 2026
9.0/10
solid stay
friendly ownerbreakfast tasteexcellent shower
The OWNER was friendly, and breakfast tasted great. The room included a refrigerator. I appreciate the fast wifi available throughout the guesthouse. I watched netflix without issue. the shower was excellent after long walks.
Facilities
9/10
The guesthouse provides free parking . wifi is available throughout the building. a mini fridge and tea and coffee facilities are available in each room. This is a convenient touch.
Location
9/10
the location is quiet and peaceful. the guesthouse is near mountains, so you get lots of fresh mountain air. access from the main road is EASY.
Dining
9/10
Breakfast includes continental and cooked options. staff prepares breakfast fresh for you. i had the welsh breakfast. It tasted good.
Rooms
9/10
the room includes a view over the garden. mugs were cleaned and restocked daily. rooms include a mini fridge, and coffee and tea is AVAILABLE.
0 Helpful
|
Elijah from United States
Single
Double Room Garden View
3 nights in November 2025
|
Reviewed: January 07, 2026
6/10
Mixed Feelings About My Stay
uncomfortable bedhot water
The shower only had scalding hot water. There was no way to adjust it so I couldn't shower. The room smelled of old smoke and felt musty, a problem since the kitchen odors also seeped in. The bed was also very uncomfortable. I did not sleep well at all. The rooms and the entire building desperately need some updating
0 Helpful
Hudson from Canada
Single
Executive Twin Room
3 nights in November 2025
|
Reviewed: December 31, 2025
9.4/10
excellent stay!
super clean roomfree parkingquick check-inlarge bedroom
the room was super clean, and the free parking made arrival simple. check-in was quick. the large bedroom included an en-suite shower and toilet. it was warm and very clean.
the breakfast portion size was a little small for me, but the taste was great and the quality undeniable.
Facilities
9/10
free parking is available to all guests. easy access is available. i noted christmas decorations.
Rooms
10/10
the executive twin room was very spacious. the provided en-suite shower and toilet were a great size. i observed everything was sparkling clean, which i loved!!!
Service
10/10
the staff members were friendly and chatty. they reminded me of the golden girls, very friendly. i felt very welcome.
Location
9/10
this location offers excellent access to local walks and places to visit. it is situated in a peaceful, quiet area. i had no trouble finding it.
Dining
9/10
the breakfast was superb. it was prepared with care and attention to detail. i would happily return.
0 Helpful
|
james from united kingdom
Couple
executive double room
3 nights in November 2025
|
Reviewed: December 03, 2025
9.7/10
a romantic highlands retreat
clean environmentcomfortable roomample parkingdelicious breakfast
the hotel was beautiful, showcasing a very well maintained and clean environment, it felt so warm and comfortable, a wonderful experience. i noticed hot drinks available right in the room, i also noticed ample parking. breakfast was amazing with a great selection of pastries, fruits, and cereals, it was a lovely feast. we found it convenient for our hike, it was a quick drive to the national trust car park.
Facilities
9/10
the location was perfect, easily accessible from the main road, and i found everything exactly as described, very excellent. the parking area accommodated several vehicles, a big help given the number of guests, and access to local walking areas was easy.
Rooms
10/10
our executive double room felt spacious with great water pressure in the super clean bathroom, a real delight. the room was warm and comfortable, i loved how well appointed it was! it added a lot to our relaxed stay.
Service
10/10
The owner and staff were good. I could not have wished for a better welcome, they were friendly! breakfast service was so pleasant. everyone.
0 Helpful
|
Aaron from United Kingdom
Couple
Double Room Garden View
3 nights in November 2025
|
Reviewed: December 02, 2025
9.0/10
Excellent Stay Near Brecon Beacons
friendly staffgood sized roomconvenient parking
The staff were friendly and accommodating. The room was a good size, with an en-suite bathroom that included both a bath and a shower. I found parking available.
The fan from the adjacent room was audible when it was turned on.
Service
9/10
The staff ensured a smooth check-in process. They were willing to assist with any requirements I had. The owner and staff were very kind and helpful.
Dining
9/10
The breakfast offered a selection of cereals, fruits, and pastries along with a cooked option. The full Welsh breakfast was delicious!!! More food was offered, demonstrating a willingness to cater to guests' needs.
Facilities
9/10
Parking was available. The location is ideal for visiting the Pen Y Fan and the surrounding waterfalls. I saw the garden and it seemed lovely.
Rooms
9/10
The bedroom was well-fitted with a comfortable bed. A mini fridge was available in the room, a very useful addition. The room was clean and modern.
0 Helpful
|
FAQs
About Llwyn Onn Guest House
Is parking available at Llwyn Onn Guest House?
Free private parking is available on-site without the need for reservation.
Which nearby attractions can guests visit from Llwyn Onn Guest House?
Nearby attractions include Cyfarthfa Castle (5 km), Morlais Castle (10 km), and Aberdare Swimming Pool (8 km).
What on-site activities does Llwyn Onn Guest House offer?
Guests can enjoy fishing, golfing, hiking, and horseback riding on-site.
What amenities are included in the rooms at Llwyn Onn Guest House?
Rooms include free Wi-Fi, a flat-screen TV, tea/coffee making facilities, and free toiletries.
Are there any dining options at Llwyn Onn Guest House?
A complimentary breakfast is provided, and guests can enjoy local dining options nearby.
How far is Llwyn Onn Guest House from Cardiff Airport?
The hotel is approximately 57 km from Cardiff Airport, which takes about 54 minutes by car.
Does Llwyn Onn Guest House provide business services?
The hotel offers a meeting room and free high-speed internet access for business needs.
What kind of views can guests expect at Llwyn Onn Guest House?
Guests can enjoy picturesque views of the Llwyn Onn reservoir and surrounding nature.
What languages are spoken by the staff at Llwyn Onn Guest House?
The staff at the hotel speak multiple languages to assist diverse guests.
Are there any recreational spaces at Llwyn Onn Guest House?
There is a beautiful garden and terrace available for relaxation at the hotel.
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