Don't bathe small children too often, especially not daily! There's a risk they develop a skin condition like dermatitis.
In Austria, the recommendation from the midwives' association is to bathe infants weekly *' and newborns and infants ordinarily don't get so dirty that you need to use soaps (and lotions afterward) -- just let the baby's skin do what it's built to do.
*' And of course as needed! :-)
In reality, we bathed our son weekly while he was newborn, using only warm water, and that was fine. Now that he's 20 months old, we put him in the tub with intervals of roughly 3-7 days (and as needed when he's played in the sandbox). We let him play in the tub for a while, then use a soft cloth with a baby soap.