Is it the photo or does that wood floor have a sag in the center of the doorway or a hump on the right hand side?
Yes and no.
1. That sag is where they poured 6 bags of floor leveler . The "Tileman"

did not set that one tile correctly and I did not see it till the job was done.
They also left the Kitchen Cabinets half completed. I had to box in t2 corners that were left open. And on the one corner they left open, they put a 2x4 to brace up the tile counter top by the stove. I got sick of waiting for them to come back to finish the job, so I turned a spindle on the lathe and replaced that 2x4 with the Oak Spindle.