A little vinegar in water is a tried and true recipe for cleaning wood floors. (You don’t want to use too much–about a tablespoon in a quart of water.) But even better is distilled water.
A few years ago the rage in the cleaning industry was using a fancy dispenser that de-ionized water for cleaning floors. At a training with ARCSI, the national house cleaning industry association, I learned that de-ionized water was tested by the association and found to be the best general floor cleaner available.
Distilled water, available at any supermarket, is a close cousin to de-ionized water and is as effective. So for the best cleaner, skip the vinegar and use distilled water. That’s what I use to clean not only wood but all floors.