Double bedroom at Trigonos

Trigonos has a number of different sized rooms available

Food laid out on a table at Trigonos

We serve fresh and delicious vegetarian society approved food as part of your stay with us

The lake at Trigonos

Trigonos is set in some of the UK’s most picturesque surroundings



As we mainly host events at Trigonos, we cannot always guarantee bed and breakfast availability for guests and do not book rooms more than three months in advance.

Room Types


Family ensuite (Sleeps 4)

£90 + £9/person

Double ensuite (Sleeps 2)

£80 + £9/person

Twin ensuite (Sleeps 2)

£80 + £9/person

Single ensuite (Sleeps 1)

£70 + £9/person

Twin non-ensuite (Sleeps 2)

£50 + £9/person

Single non-ensuite (Sleeps 1)

£40 + £9/person


Young People


Children (4-12 Years) 

Half Price 

Infants and toddlers (0-3 Years) 



Additional Meals 


Lunch (2 Course) 


Dinner (2 Course) 


*Additional meals are not always available, please check with us first


Where is Trigonos?

We live in the Nantlle Valley (Dyffryn Nantlle) about 8 miles from Caernarfon, between the sea and Snowdon (Eryri), bordering the Nantlle lake.

It’s a great walking, climbing and biking area and provides easy access to beaches, medieval castles, narrow gauge railways, slate mine tours and much more. Or you can wander through the 18 acres of Trigonos meadows and small woodlands, sit by the lake and watch the natural world go by.


We have a range of bedrooms, single and twin rooms both ensuite and non-ensuite. A couple of our larger rooms are suitable as family rooms. See for more information. 


May 2023

  • Sunday 28 – Monday 5 June

June 2023

  • Wednesday 7 – Friday 9
  • Sunday 11 – Monday 19
  • Sunday 25 – Friday 30

To book, please email [email protected]

We give you

  • B & B with the option of lunch and dinner as required*
  • Delicious vegetarian food
  • Peace and quiet with space to wander
  • Superb mountain and lake scenery
  • Near to many tourist destinations
  • Single, double and twin rooms, both ensuite and non-ensuite
  • We don’t have TV or a bar – but we do have WiFi in all of our bedrooms & buildings – and you can bring your own alcohol (much more economical)

Our Vegetarian Food

We are well known for the quality of our vegetarian & vegan meals that are imaginatively cooked using fresh produce, some from our own land.
We have now been approved by the Vegetarian Society for our vegan and vegetarian food.

All meals are to fixed menus and guests serve themselves from a well-provided table and set meal times. We are happy to meet the needs of those with allergies, strong food intolerances and particular conditions such as coeliac is what we regularly do – your food will be every bit as good as for those without special dietary needs. Find out more about the food on offer here.