Pantiles Cottage is in Belford. It's a small village just off the A1. Handy if you're driving up.
The cottage itself sleeps four. Two bedrooms, one bathroom. It's got a 3 Star rating. Everything works and it's clean. There's an open fire for the evenings. The garden's at the back. It's a raised lawn so you get a decent view over the fields.
Belford has what you need. There's a Co-op supermarket, a few pubs that do food, and a couple of cafes. The village farm shop is good for local stuff.
You're about ten minutes from the coast by car. Budle Bay is three miles away. It's good for watching birds. Bamburgh and its castle are four miles. The beach there is huge. Seahouses is five miles. That's where you get the boat trips out to the Farne Islands if you want to see the seals and puffins.
If you head inland instead, you're close to the Northumberland National Park. Good walking country. St Cuthbert's Cave is a short drive and then a walk from the car park.
Holy Island (Lindisfarne) is about a fifteen minute drive, but you have to check the tide times for the causeway. Berwick-upon-Tweed is twenty minutes up the road. You can get a train to Edinburgh from there.
Facilities: WiFi, TV, washing machine, bedding and towels are all included. There's parking. One well-behaved dog is allowed.
Useful links: Northumberland Coast AONB and Visit Northumberland.