I ran into the same POV issue before, and what worked for me was locking the viewport before saving the view, then using 'View > Align View > Save View' and typing the exact camera coordinates manually in the N panel instead of relying only on saved views. Rendering 40-50 images is tedious, so I'd take short breaks playing Slope Unblocked between batch renders to stay sane. Good luck with the floorplan, it looks like a great project!