This is the Shepherds Hut up in High Halden. It's on our land, but you get the whole private corner to yourselves. It's quiet, down a country lane.
Honestly, it's small and simple. It sleeps two, one room, one bathroom. It's got the 3 Star rating, which is about right. Everything's on one level, which is handy. The entrance is accessible if you need it. It's got heating, hot water, a shower, a TV, and WiFi. Bedding and towels are there. There's a patio with a BBQ and a bit of garden space.
You're in the countryside here. There's a bridlepath at the end of the drive and lots of footpaths for walking. The High Weald area is around you. It's about a 20 minute drive to the coast at places like Rye or Camber.
Tenterden is three miles away for shops and cafes. Ashford is about ten miles. The Ashford outlet is there if you want shopping, and the station has trains to London. The M20 is easy to get to.
Useful links: National Trust South East and Visit South East England.