This is a tough one without re-doing the floors. Could you call a tile store? Maybe they have some type of treatment to 'rough up' the tiles. Also, since you have elders in the home, grab bars placed in well thought out locations might be a good idea anyway, along with skid-free rugs.

Hello Gurpreet Nice to see you in this beautiful platform. As kitchen is a main part of your home,therefore it should be neat and clean. One should clean their kitchen once in a week whether your own or commercial.Choosing flooring for a kitchen is a very important decision.I think hardwood flooring would be nice options for commercial kitchen as it is easy to maintain. Porcelain and ceramic tile would be an ideal for commercial kitchen.For better advice you should contact with interior designer.

this is looking good. finally someone on houzz has listened! Thank you. I would leave it as it is since any items you place up there needs to be maintained and that is one more task we would be adding to the lady of the houzz. but if you are still wanting to add something for that first client impression may be few large glass pickle jars or just two of three colourful glass sculptures. as would perhaps know - less is more in modern design.

your staircase block is nice. use natural store cladding, if cost permits, else some nice stone designed tiles should also do the trick. as per the tile/stone, you can either go with the similar family for the rest of the wall painting. ensure the moldings/projections are painted in lighter tone than the walls, so that they do subtly stand out.