Follow the A835 and A837 from Ullapool to Lochinver. Just before Lochinver turn right onto the B839 signposted to Drumbeg. Ruighe is just over a mile on the left.
You will know you are close when you see a gatepost on the left with 83 on the post. The next gate on the left will have a sign for Ardmore House and also a black slate sign for 'Ruighe'. Go through the gate to the top of the hill, drive past Ardmore House and continue to the bottom of the drive (through another gate) where you will find Ruighe.
For Satnav/Googlemap users the Postcode is IV27 4JB however this covers a large geographical area and as with the map above will take you to the Achmelvich Road. Ruighe is about 1/2 mile before the Achmelvich junction.
(For the IT literate, you can follow the road up to the gate from the main road on Google streetmap)