Do NOT use a Sat Nav to find the Sun Inn – it will more than likely lead you a merry dance/wild goose chase/whatever and you are more than likely to end up in a field.
Use a good old map instead, or Google a travel planner. If coming via Rhayader, the B4518 is a turning off the A470 right by the leisure centre and opposite the Smithfield cattle market. Follow the B4518 for just over 3 miles and you will come into the village of St Harmon. Travel through the village, past the church and phone box on your right, over the river Marteg and you will see The Sun, a fairly large detatched Welsh stone building on the left hand side.
The full postal address is:
The Sun Inn
Tel: 01597 870366
For booked events - anytime day or evening
open at 6.00p.m., (but closed on Tuesdays)