It does not say where the movie was filmed at only that it is set in England. Shot on location:
Carmel-by-the-Sea, California, USA
Monterey Peninsula, California, USA
Seventeen Mile Drive, California, USA
and on the backlots of Twentieth Century Fox
The cottage resides in
Montecito, California, shouldered between condominiums, and minus the
lion statues on the porch, the ship's wheel on the balcony, and the
widow's walk on the roof. Many of the interior scenes in the
television series were shot in the house,
Natalie Wood
"The Ghost and Mrs. Muir" (1947). Stars Gene Tierney, Rex Harrison, George Sanders, Natalie Wood.
The British seaside.
The Ghost and Mrs- Muir - 1968 Dear Delusion 1-15 was released on: USA: 4 January 1969
I believe the movie you are thinking of is called 'Secrets in the Attic.'
Natalie Wood
"The Ghost and Mrs. Muir" (1947). Stars Gene Tierney, Rex Harrison, George Sanders, Natalie Wood.
The Captain
John Muir - naturalist - died in 1947.
The Ghost and Mrs- Muir - 1968 Host to the Ghost 2-13 was released on: USA: 18 December 1969
The Ghost and Mrs- Muir - 1968 Pardon My Ghost 2-20 was released on: USA: 13 February 1970
The Ghost and Mrs- Muir - 1968 The Ghost Hunter 1-4 was released on: USA: 12 October 1968
The Ghost and Mrs- Muir - 1968 The Ghost of Christmas Past 2-14 was released on: USA: 25 December 1969
The British seaside.
The Ghost and Mrs- Muir - 1968 Chowderhead 1-19 was released on: USA: 1 February 1969
The Ghost and Mrs- Muir - 1968 Pilot 1-1 was released on: USA: 21 September 1968
The Ghost and Mrs- Muir - 1968 Madeira My Dear 1-12 was released on: USA: 14 December 1968