I cant see the new image...
but the stairs... (mentioned)
the water... if you can't get it to work... get rid of it.
I suggest more reflection, make the material a lighter colour (try the same colour as the floor) Also, it seems to be a star trek organism. Too continuous. If it were really on that floor it would adapt to the floor's shape. It would flow into the little cracks, and have a much more rough edge. If the tile is rough unpolished marble you would also see a small 'wicking effect' where the water bleeds into the material itself, so you should have two puddles, or a water puddle, and a slightly larger 'wet area'
the wall... texture is too low-rez. Looks like a artifacted .jpg to me. This kind of material, with the angle of the sun would create some pretty visible and dramatic self-shadow... Try using it as a bump map as well...
Another note. Those vertical lines are actually the spaces created by the large (4x8foot) planks of wood used for the pour. The cement seeps into these spaces creating the bubble effect we see here. So, the scale is a bit off... If this cement form was planking, then the lines would be 5-8 inches apart... so, it is either too small, or too big..

However based on the other details I'd be willing to bet it was done with larger strips of plywood built into 8 foot form lengths. I don't see spacer holes, so I'm guessing this is from some form of industrial retaining wall rather then cement foundation. I digress.
The leaves... stuck to the wall? Part of the wall texture... it should be removed?
The planter... Is it terracotta? If so it would be much rougher, thicker and a little more amber. If it's plastic, it should have a specular of some kind.
the chair... metal is perfect. The black cloth is a little black... even black cloth would have SOME hilites... perhaps a very subtle lightening of the black on the edges? Unless it's made of black hole material... well then...
stupid but obvious questions:
Why is an interior chair outside?
Is it outside?
if so, both the chair and stairway are of interior materials.
if it's inside, the floor needs work... and why would water be on the floor inside?