Allt Yr Ynys Country Hotel

Walterstone (Nr Abergavenny)

01873 890307


Location map HR2 0DU

  • Dietary Requirements
  • Type of Food Establishment
  • Country House
  • Evening Meals
  • Hotel
  • Restaurant
  • Vegetarian Options

Allt Yr Ynys (pronounced alt-ur-inis) is centred on a stunning 16th Century manor house, set in the foothills of the majestic Black Mountains on the fringes of the beautiful Brecon Beacons National Park.

A former Les Routiers Welsh hotel of the year, with an award-winning restaurant, Allt Yr Ynys is an excellent base for a wide range of outdoor and indoor leisure and recreational pursuits centred on the hotel’s own indoor heated swimming pool, sauna and clay pigeon shooting range.



Set within stunningly beautiful Welsh Borders countryside, on the fringes of the Brecon Beacons National Park, the Black Mountains form a magnificent backdrop to  Allt Yr Ynys Country Hotel, a converted 16th century manor house offering a comprehensive range of resort facilities.

Following a flood in 2008, the hotel has undergone extensive refurbishment both throughout the public areas and in many of the rooms.If you seek tranquillity, rest and beauty, then look no further.


Lush lawned gardens lead down to the River Monnow fronting the hotel which, together with the Elizabethan Knot Garden in the walled gardens at the rear of the hotel create a simply perfect venue for your leisure break, conference, wedding or party, as well as for restaurant or informal dining.

Conferences, weddings and civil ceremonies are a speciality at Allt Yr Ynys and can be held in a number of rooms, the most popular being our Jacobean panelled Drawing Room.

In brief, we offer

19 quality en suite bedrooms

A 16th Century panelled 4-poster suite

An award winning restaurant

Conference facilities for up to 100 delegates

Wedding facilities for up to 250 guestsLicensed for Civil Wedding Ceremonies

Indoor heated swimming pool


Covered state of the art clay pigeon shooting range

Cider Mill public bar

Elizabethan walled knot garden

16 acres of landscaped gardens, pasture and woodland


A wide range of sports and leisure activities easily accessible from the hotel, including golf, walking trails, horse-riding, fishing, paint-balling, quad-biking, and many others.

The hotel boasts its own indoor heated swimming and sauna and the covered clay pigeon range can be enjoyed by both beginners and experienced shooters. We can also arrange fly and coarse fishing on numerous rivers and lakes in the area.

Within easy access of the hotel we offer first class walking (Offa’s Dyke is a stone’s throw away) and golfers of all standards are well catered for with seven golf courses close to the hotel, including the Celtic Manor Resort, venue for the 2010 Ryder Cup.

For those thrill seekers looking for more active and challenging pastimes, there is horse-riding, caving, cycling, off-road and quad-bike driving, ballooning, hang-gliding, para-gliding and much more.

Allt Yr Ynys is ideal for family and social get togethers and celebrations of anniversaries, special birthdays or just to catch up with friends and relatices. 

Children and pets are most welcome and we offer child friendly facilities as well as special children’s menus.




Allt Yr Ynys can be translated from Welsh as ‘the gently sloping meadow between two rivers’,  a reference to the tongue of land between the rivers  Monnow and Honddu in front of the hotel, and the fields up to the Cat’s Back and the nearby picturesque village of Walterstone.

It was, from the 11th Century, the ‘cunabulum gentis’ or cradle of the noble and renowned Cecil (originally Sitsylt) family, which first came to prominence through Robert Sitsylt, who assisted Robert Fitzhamon in his conquest of Glamorgan in 1091.  An antecedent of Robert’s was Rhodri Mawr, King of Wales in the 8th Century.

It is said that Robert took possession of the then vast Allt Yr Ynys estate through marriage to the heiress of the property, the daughter of Sir John Gwyn.  From this family branched off the ‘Cecils’ who eventually became Marquises of both Exeter and Salisbury.

Parts of the house remain in their original state.  In 1647, the hall was described in a survey as 30 ft. by 20 ft., with an ornate plaster ceiling from  which went a wainscoted parlour with the arms of Cecil and de la Hay in the window.  A chapel  at the side of the house burned down at the end of the last century leaving only the walls in which our Function Room was created.

David ‘Cysell’ of Stamford (1491-1541) not only inspired the building of Allt Yr Ynys but also could be regarded as the architect of the family fortunes. He lived when Henry VII and VIII were Kings, and by dint of push and tact he acquired the positions of Yeoman of the Guard under Henry VII with whom it is said he fought at Bosworth and of Alderman of Stamford and Sheriff of Northamptonshire under Henry VIII.  A prudent far-seeing man, David placed his eldest  son, Richard, at court, where he was at first a Royal Page and then Master of the Robes.  In the latter capacity he was present with King Henry VIII at the meeting known as the ‘Field of the Cloth of Gold‘, reaping substantial financial gains and other benefits in the process.  The Field of the Cloth of Gold was arranged in 1520 with the aim of increasing the bond of ‘friendship’ between Henry VIII and King Francis I of France following the Anglo-French treaty of 1514.  After a few years of royal favour, Richard Cysell retired to his native county to enjoy the wealth he had acquired.

Certainly the most illustrious of the Cysells or Cecils was David’s grandson, William – the 1st Baron Burghley (1521-1598) – who served as Chief Secretary of State and the Lord High Treasurer to Queen Elizabeth I for all but the last few years of her reign.  He was succeeded on his death by his son Robert – the 1st Earl of Salisbury (from which the capital of the country originally known as Rhodesia – now Zimbabwe – derived its name).

Interestingly the family lineage can be traced through to the current Royal family -  Prince Charles is the 12 times Great Grandson and Lady Diana was the 12 times Great Granddaughter of William Cecil.Subsequent generations of the Cecil family have also led public lives in high office.  Lord Robert Cecil, the 3rd Marquess of Salisbury, was three times Prime Minister, serving for a total of over 13 years.  He was the first British Prime Minister of the 20th century and the last Prime Minister to head his full administration from the House of Lords.  As a curious side note, the British phrase ‘Bob’s your uncle’ is thought to have derived from Robert Cecil’s appointment of his nephew, Arthur Balfour, as Minister for Ireland!

The current 7th Marquess, Robert Gascoyne-Cecil, a past visitor to Allt Yr Ynys, was for many years Tory Leader of the House of Lords.


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