I think it looks very modern, and is lovely, but actually I would hate it.
To me it feels very sterile.
So, if I were to change it, I would want something softer and with colour, but keep the clean unclutteredness.
so suggestions
change bar stools, they look unomfortable any way.
get a much bigger more substantial table, and then put striking chairs round it, maybe even of different colours.
Change the wall paint colour, it adds to the blandness, you could be really brave, the room has lots of light reflecting surfaces. Go birght orange! (only half joking)
Get something to catch the eye, it is all very monotone, no personlity, a picture, a tall sculptue in the corner by the table, a centre peice on your new big table, an interesting clock, mirror, it needs a focus and something personal, without being fussy.
A new floor would be really expensive, and I'm not sure it would work. (would you lay it on top? if not, how are you going to rip out the floor without wreckign everything else? If you lay it on top, what about the doorways etc?)