What the official area evidence actually says
Visit Porto describes Rua de Cedofeita as a shopping street where traditional stores sit beside larger fashion brands, with Portuguese calçada underfoot. Its Rua Miguel Bombarda page describes a 650-metre cultural artery with galleries, restaurants, bookshops and design or fashion businesses. That supports a western cultural-and-retail base; it does not make every address sold as “Cedofeita” identical.
Visit Porto presents Bonfim as an artistic district and names anchors including the Fine Arts faculty, Municipal Library, São Lázaro garden, Bonfim church and the Military Museum. The live neighbourhood evidence also separates the São Lázaro, Campo 24 de Agosto and Heroísmo pockets. Choosing Bonfim therefore requires an exact address rather than a generic promise of local atmosphere.
Neither source proves that one side is quieter, flatter or more authentic. Room direction, glazing, entrance steps and the route you repeat each day remain hotel-level or street-level questions.