Ceramic tile and porcelain are very easy to keep clean. Sweep or vacuum as needed and mop with a mild detergent (like Spic-N-Span or Mr. Clean) or ceramic tile cleaner. Don't use harsh abrasives.
Natural stone (travertine, marble, granite, etc.) is sealed as part of our installation process. Natural stone should be cleaned with neutral cleaners. Never clean with any product containing acid, lemon, or bleach. Acids, even a light solution of vinegar and water, will eventually etch and damage natural stone. Do not use scouring powders or creams; these products contain abrasives that may scratch the surface. Many common food and drinks contain acids (including alcohol and citrus juices) that will etch or dull the surface. Wipe up and clean with mild soap and warm water all spills immediately. Stone sealers should be applied as soon as you notice water no longer stands (beads up) on the surface.
Sealing your grout will make the grout less porous and more resistant to discoloration. Manufacturers recommend sealing your grout once a year to keep it looking its best. We have grout sealers and natural stone sealers available for sale in our showroom. You can also upgrade to a stain resistant grout. Ask your Design Consultant for details.
Most people use 18 x 18's or larger in kitchens. If you want to make your bathroom seem bigger, a larger tile or a tile installed on the diagonal will accomplish this.