Spilstead Barn is in Sedlescombe. It's a converted barn on a working farm with stables across from the front door. It's a nice spot, quiet.
It sleeps four. Two bedrooms upstairs, two bathrooms in total. It's got a 4 Star rating, and it's well-finished with things like underfloor heating downstairs. The stairs are normal, not a ladder. One bedroom is a twin, the other has a king-sized bed and looks out over the fields.
The garden is private and enclosed, good for dogs and kids. Beyond that, there's a half-mile walk through the estate down to a private lake. There's a rowing boat there you can use, and you can swim if you want. It's peaceful.
Sedlescombe itself has a village shop and a couple of pubs you can walk to. Battle is about ten minutes by car. Hastings and the seafront is maybe twenty minutes. Rye is half an hour away.
You're right in the middle of the 1066 country. For history, Battle Abbey is the obvious one. For walks, the Sussex Wildlife Trust sites are good, or the National Trust has a few places like Bodiam Castle nearby.
Facilities are pretty complete. Washing machine, WiFi, TV. There's parking and an electric car charger if you need it. It says it takes two pets. They provide things like a cot and highchair.