That looks beautiful from the outside. It would be a dream come true to live on and manage an estate like that. It's a fantastic part of the country and i still talk about the trip up to your place. Come to think of it, i still talk about the hangover too!
£15m is more than this area can carry. It's a nice location and there are a few castles and nice houses, etc., but this is not next to Silicon Valley, the City, or Wall Street and it is not a warm tax haven with golden beaches and run-away billionaires.
The guy who built it is Canadian and the whole thing is typical American kitsch inside. People who come here are in part looking for history and tradition, not 24 electric armchairs in the media room!
Scotland has nicer houses for one-tenth of the price!