No offense to the modellors, but I already looked and none of them suited my purposes or had the look that I wanted.
IMO there's nothing wrong with mixing stock 'ww2' and 'sci-fi' media, if it fits in with my story and looks the part. Besides, the two are seperated in the level. The 'ww2' mansion is on the surface, with the 'sci-fi' facility underground. So the only 'mixing' in the mansion is with the 'sci-fi' weapons (part of the story) and a few structural elememnts (again, part of the story).
On top of that, the mansion has not been used within a 'ww2' context. If it was a 'ww2' story with 'sci-fi' elements, or visa-versa, I would perfectly well understand your point of view, maybe even agree with you. However, the mansion is not being used as a 'ww2' mansion, it is simply an old house used to hide an underground facility.
I think people tend to get a bee in their bonnett about the stock media. If it's there to be used, then use it as you see fit. If other people have made better media, then fair enough, feel free to use it. IMO there are no other better, or more suitable, free mansions that I can find to use. Again, no offense to all the talented modellors in these forums.
I game therefore I am.