Mike says that on this shoot he bracketed the white balance. That is, on each of the interior shots he made exposures with white balance set for the exterior (windows) and other exposures with white balance set for the interior and then combined the windows with the interiors via layer masks. This approach creates a very pleasing result I think. As usual Mike does all his post processing in India.
Apparently this property has been marketed with someone else's photos in the recent past. I think Mike's work looks much better than the previous work.