Is Castellar del Vallès safe for solo female travelers?

There’s not much population and the majority are old people or families with toddlers. Overall there are no cases of crime, and teenagers are welcoming. It may be some drug dealers or addicts, but they’re friendly if you know them and won’t approach you dangerously. At night there’s bar activity so you feel safe, but almost no one walks at night here. I’ve never had a case of harassment or anything similar!