Sea Shells is a one-bedroom cottage just outside Padstow. It's a converted barn in a little courtyard with a few other holiday lets around it. The fields start right there. It's quiet.
It sleeps four, but the bedroom is one double. The other two sleep in the living area on a sofa bed. It's all open plan downstairs, which makes it feel spacious. The floor is tiled, it's easy to keep clean. It's got a 4 Star rating. It's been done up well.
You've got your own enclosed patio out the front, it gets the sun. There's a shared bit out the back with a barbecue you can use. Parking is right outside.
Padstow itself is about a mile down the road. You can walk it if you don't mind the hill back. It's got the harbour, shops, and all the restaurants. The beach at Trevone Bay is about two miles away, it's a good sandy one. You're on the coast path straight from there.
Inside, it's got what you'd need: WiFi, TV, a washing machine, a dishwasher. Bedding is included. One well-behaved dog is allowed.
If you're planning trips, the National Trust Cornwall site has good information. For the coast path and beaches, Cornwall National Landscape is useful.