I agree with mfwolfe it is a definite slip hazzard ( if it must be concrete have the installer add silca to the final coat of sealer) to add slip resistance but you should consider cork tile as a alternative lots of colors, naturally warm underfoot, good in wet spaces ( not in shower of course) check out sites like ( Expanko) cork floors, some neat stuff available - shower floor done in small mosaic tile will minimize slipping and take any settling in slab in stride

Have you heard of quartz carpet? It is a composite of quartz aggregate and resin, uv resistant no fade, soft underfoot, seamless indoors or outdoor use and can be installed over existing concrete floor, ply etc so evening a miss matched floor is easy. Mid century have some stunning leftovers like large elongated space, timber detailing and panelling and innovative material application for their time. When we restore them today often in respect to them we more often upgrade these innovAtions while still feeling at home. Remember cork floors, they felt great, insulated well and laid easily, but look outdated now, Quartz carpet has that same feel, but much sexier! evolution surfaces website can help. Their polished concrete veneer is also interesting. Good luck. ML Design

My builder recommended Diamond Shine in Alexandria

we have decided to go with concrete floors in our new build. the foundations have just been done, and the team came through and power floated the floor. It rained the next day, which showed us the full effect of what the floor will look like (the builder said its good for it to rain too as means less likely to crack) and we LOVE it! so much so that i rang the builder and asked him to be careful on the hallway floor too as we want to continue the concrete finish up there as well. We arnt going for a ground floor as i find it a bit too busy and we are wanting a more relaxed industrial look. This is the photo i supplied the builder and it looks pretty much the same. The finish is achieved as soon as concrete foundation is poured. they "buff" the concrete, which "burns" the top, giving it quite a organic look. once this is done, the floor needs to be protected from chips etc while they build, then all that needs to be done is sealing once the build is finished. it came in alot cheaper than tile, or wood, but more expensive than carpet. our house is north facing with a lot of glass on that wall. the architect told us that the thermal mass from the flooring will be awesome! keep us updated on what you choose. :)