Looks great! Are you rendering with EEVEE Next?
Regarding the low-res textures: they don't look too bad, but you could always blur the final image a bit and add a VHS filter like others do with Backrooms content. (But then all the other details would be obscured somewhat.)
I think 'EEVEE Next' is just the project name for a bunch of modernized changes, but idk.
Oh yeah, forgot to mention that's a good way to use geometry nodes for quick building layouts!
I wonder how difficult it would be to add floor moulding. It might involve needing to get edge data using a script, but it might also be possible to duplicate edges and find them using a special node group...