acertar con

A fixed collocation meaning to hit upon or find the right thing — often by luck or good judgment: acertar con la solución, acertar con el regalo perfecto. Distinct from plain acertar, which is about being correct rather than about locating/choosing well.

• Acertó con el regalo perfecto para su madre. — She hit upon the perfect gift for her mother.
• No acertamos con la calle y nos perdimos. — We didn't find the right street and got lost.
• Acertaron con la estrategia y ganaron el partido. — They got the strategy right and won the match.

Don't drop the con — 'acerté la calle' sounds odd; the idiomatic phrasing is acertar con la calle when talking about finding/choosing the right one.