Thought I would give the pla file a go with Strata CX. Feel free to comment.
The glass textures are from a project I did a while back. They have a bump map in them to try and recreate the distortion you see in glass. The floor texture is actually a procedural texture (planks with nails and grain) and "multiplied" with a straight forward texture map I had. Strata CX lets you layer textures in a similar way to Photoshop.
The walls (following Dwight's advice elsewhere) have a texture map using the noise filter in photoshop. I've actually used a different one on the right hand wall to see what it looked like. To be honest I prefer the wall on the left.
This is a radiosity rendering using a built-in sky dome and one point light source. It took 3hrs 20 mins to render at 800x600
AC versions 3.41 to 25 (UKI Full 5005).
Using AC25 5005 UKI FULL
Mac OSX 10.15.7 (19G2021) Mac Pro-2013 32gbRam AMD FirePro D500 3072 MB graphics