Porth Nanven Barn is in Bosorne, near St Just. It's a converted granite barn, so the walls are thick and solid. It's detached and set back from the lane.
It sleeps five, three bedrooms, two bathrooms. It's got a 5 Star rating, which means it's well-equipped and finished. It feels very new inside.
You're right on the edge of the Cot Valley, which is quiet and green. The Cornish Coastal Path is about two minutes walk from the door. You go out the gate, turn right, and you're on it. The views from there are very good.
Porth Nanven cove is a short walk down the valley. It's a small, rocky bay. You can swim there. There's a bit of a path down.
For bigger, sandy beaches, you drive. Sennen Cove and Gwynver are about ten minutes away by car, maybe five miles. They're good for surfing.
St Just, the town, is less than a mile. You can just about walk it. It's got the basics: a couple of shops, a Co-op, pubs, cafes.
In terms of stuff here: there's a wood burner, a dishwasher, a washing machine. The garden is enclosed. Parking is on site. Bedding and towels are included. There's a cot and highchair if you need them. You can bring up to two dogs.
Useful links for the area: National Trust Cornwall and for the coast path, South West Coast Path Association.