Coelard Farmhouse is in North Shian, a few miles from Port Appin. It's a detached place, on its own. You get fantastic views over Loch Creran from the front. The house sits in its own big garden, and there are about five and a half acres of the owner's land that go down to the lochside. You can walk down to the water.
It sleeps four. Two bedrooms, one bathroom. The bathroom has a shower. It's rated 4 Star. It's comfortable and well looked after. There's a wood burner stove in the living room that runs on electricity, so it looks like a real fire but you just switch it on. There's a window seat there too.
The kitchen has what you need: dishwasher, washing machine. Bedding and towels are included. There's WiFi and TV, and parking right outside.
It's quiet here. You'll see plenty of wildlife. For shops, the nearest is about two miles away in Barcaldine. There are a couple of very good restaurants within a short drive; one is at the Airds Hotel in Port Appin.
You're well placed for exploring. Glencoe is about half an hour's drive. Fort William and Ben Nevis are a bit further, maybe forty minutes. You can get to Oban for the ferry to the islands in under thirty minutes. Good walking and cycling starts right from the door. If you're into sailing, there are places nearby.
Useful links: National Trust for Scotland Glencoe and Walkhighlands Argyll for route ideas.