I took much effort in getting all the photos as sharp as possible, and with matching exposure values, which can be tricky because there are two fluorescent lights in there.
My camera was on manual, RAW, ISO 1000, white balance fluorescent, f/14 for sharpness and positioned in portrait mode.
It is really just a square box so I shot with my back to the wall, walking along the edge shooting the opposite side. It was 150 photos for each lap around the room. The first lap my tripod was very low, knee level, shooting up to get ceiling and upper wall, then 2nd lap around the tripod was at full height, over my head, angled down and getting the floor and lower wall. I pretty much ignored the stairs, but they came out with some detail, so maybe I will get them better on another room scan later.
The processing was done with Reality Capture on my laptop which took about 17 hours. The high rez mesh was 37 million polygons, then I decimated down to 1 million for sketchfab and a 4k texture.
While there I shot a 7k segmented HDR pano for use later in Maya as a light source.