People often ask how do they get their porcelain tiles shiny without it having soap marks on it.
A helpful hint is to use about a teaspoon dishwashing liquid per bucket of lukewarm water for washing your porcelain floors. This will leave your floors nice and shiny.
For a fresh good smell, add a small cap of liquid air freshener to your mop water.
If your floors have soap marks on them, ease up on the amount of soap you are using- it means you are using too much product.