I do think it depends on the style of house and decor - but having said that, I love polished concrete :)

If they really are hard water residue spots, and scrubbing with vinegar solution hasn't worked, perhaps leave neat vinegar to sit for a while before scrubbing off. The next step would be a cleaner that contains hydrochloric acid, or try your own solutions of this acid. Start with a weak solution and make it stronger if necessary. Be careful with the acid though.

Hi Adelina, As a general rule, MOST porcelain tiles are 10mm thick and glue allowance is 3mm. Have the builder leave 13mm total height in the areas you will be using tiles. See link to some options of neutral coloured porcelain tiles all in the 10mm thickness. https://www.tilecloud.com.au/categories/material/2/Stone%20Look  Assuming the concreting is of good quality, the tiles will be stuck directly to the slab with no need for a screed. (only really required when the concreting is poor or you need to change heights) So that takes care of the downstairs. Bamboo flooring varies anywhere from 6mm all the way up to about 22mm so it really depends on which you choose upstairs. Hope that helps!

Hi Chris, The Jolly edge will look the best if you are using Porcelain Tiles. If your Mitred Jolly edges are cut and grouted properly you should not have a problem with chipping. Your tiler can cut all the mitres on the factory edge and set their saw so it preserves a small amount of that edge so to avoiding a sharp point (which otherwise is vulnerable to chipping). If you can't find a tiler with a diamond saw machine like a Hasqvarna with sliding overhead arm, which can do your Mitre cuts, then you could try marking out all your cuts and take these tiles to a stone mason (granite fabricator) near you and ask them to do these cuts for you. A stonemason experienced in fabricating large sheet Porcelain tops such as Neolith or Quantum+6 would also be a good place to start as these will know how to treat your tiles. Hope this is of help. Regards, Malcolm