The penthouse apartment, complete with roof terrace, overlooks the grounds of Charlton Park House, which on land that once belonged to the Abbey of Malmesbury.
The Great Hall
The mansion was built for the Earl of Suffolk and Berkshire in the early 17th century, and the family continue to own and farm the surrounding estates.
In 1975 the property was converted into 19 apartments.
It also boasts two private grass airstrips and began to host the annual WOMAD Charlton Park music festival in 2007.
The property now available includes access to a galleried 'Great Hall' underneath an oval dome, as well as a communal drawing room which has plasterwork attributed to James White.
Both rooms are available to residents and their guests for entertaining purposes and general use.
The Savills website states: "The property is well planned and is laid out to include a welcoming hallway off which are two of the bedrooms with exposed beams and fitted wardrobes, a bathroom and shower room. There is also the well fitted kitchen. At the far end is the wonderful drawing room, which also provides plenty of space for dining.
The roof terrace
The room which is 38' feet in length has well fitted bookshelves, a central fireplace with gas fire, carved wood panelling and of course the splendid views. Adjacent is the main bedroom with exposed timbers, dressing room and bathroom.
"Approached via a spiral staircase off the drawing room is the turret room which makes for a unique study with windows on all sides. Four sets of French windows lead from the apartment onto the L shaped roof terrace."
The drawing room
Property agent Anthony Coaker added: "It is a very comfortable apartment with wonderful parkland views."
The apartment has a double garage in the nearby garaging complex.