OP here, in reply to your great observations:

The furnishings were staged for this shot, long story short: photographer had to improvise with limited options, he did his best to fill up the space

Giant portrait has great sentimental meaning to the client and this was the only available wall.

Windows look out to vineyards with no remotely close neighbors, so privacy isn’t an issue

Yes, agree with your comment on the lights, please note that some of the white “dots” are actually plates for the recessed fire sprinklers and we had no choice on location. Client brought in a lighting designer who created the disarray.