Llwyn Onn Guest House

Llwyn Onn Guest House is a four-star bed and breakfast in a stunning spot on the bank of the Llwyn-on reservoir, deep in the Brecon Beacons near Merthyr Tydfil. With beautiful water and mountain views from the moment you arrive, eleven comfortable en-suite rooms and an exceptional breakfast, it is a peaceful and superbly placed base for walkers, cyclists and anyone exploring the southern Beacons.

A lakeside guest house in the Brecon Beacons

The setting is the star here. The guest house overlooks the Llwyn-on reservoir, with the front rooms looking out over the gardens and the lake and the back and ground-floor rooms enjoying woodland views. The eleven en-suite bedrooms — including garden-view, executive double and twin rooms — are comfortable and well kept, and the breakfast is a real highlight, regularly singled out for praise by guests.

Comfort and convenience

Recently awarded four-star status by both the AA and the Welsh Tourist Board, Llwyn Onn combines a beautiful location with genuine comfort. There is free off-road parking, free WiFi, tea and coffee in every room and facilities for disabled guests, making it an easy and relaxing base for a Brecon Beacons break.

At a glance

• Four-star guest house on the Llwyn-on reservoir
• Eleven comfortable en-suite rooms with lake or woodland views
• Exceptional breakfast, highly praised by guests
• Free off-road parking and free WiFi
• Near Pen y Fan and the southern Brecon Beacons

Where it is

The guest house sits on the bank of the Llwyn-on reservoir in the Taf Fawr valley, in the Brecon Beacons near Merthyr Tydfil. It is a peaceful, scenic spot with the lake, the mountains and the forest all around, yet within easy reach of Cardiff, Swansea and Brecon. You can browse more places to stay across the area on our Brecon Beacons accommodation page.

Things to do nearby

This is a superb spot for the outdoors. Pen y Fan, the highest peak in southern Britain, is close by, and the world-class mountain-biking trails of BikePark Wales are just down the valley near Merthyr Tydfil. The Garwnant Forest Centre, with its walking and cycling trails and family activities, is nearby, and the Taff Trail runs through the valley for gentle walking and cycling. There are lovely walks right around the reservoir, with the central Beacons and the Taf Fechan valley all within easy reach.

Who it suits

With its beautiful lakeside setting, comfortable rooms and hearty breakfast, Llwyn Onn suits walkers, cyclists, mountain bikers and couples who want a peaceful, scenic base in the heart of the Beacons. Its position near Pen y Fan and BikePark Wales makes it especially appealing for active breaks, while the views make it a lovely spot simply to relax.

Good to know

The lake-view rooms at the front are worth requesting for that wonderful outlook over the reservoir. The breakfast is genuinely a highlight, setting you up well for a day in the hills, and the free off-road parking makes coming and going easy. Please note the guest house does not accept pets. Booking ahead is wise in the main walking and biking season, when the southern Beacons are at their busiest.

Frequently Asked Questions

Where is it? On the bank of the Llwyn-on reservoir in the Brecon Beacons, near Merthyr Tydfil.

How many rooms are there? Eleven comfortable en-suite rooms.

Are there views? Yes, lake views at the front and woodland views to the rear.

Are pets allowed? No, the guest house does not accept pets.

What is nearby? Pen y Fan, BikePark Wales and the Garwnant Forest Centre.

Llwyn Onn Guest House is a peaceful, scenic choice for a Brecon Beacons break. Check availability and book your stay using the booking options on this page.