Looks real good, Mirek!

I agree the urinals don't quite fit...just yet! They look a bit large, and obviously the texture isn't finished...but they could fit in quite well with a little work!

The overall prison looked very "Cold War" at first; the bricks seem to shrink the size of the room. I confess I did like the stone/concrete, but that is just my personal preference. Your textures are coming along very nicely!

I would add DAMPNESS! Maybe some mildew. Give the floor some of that "old concrete rot".

The overall scene does scream "prison", so you're definitely on to something!

Keep up the good work!