When you're in the Holy City be sure to visit the original icon in Genazzano, just east of Rome. Meanwhile, this is the Rome street shrine with altar for devotions.
Here is a taste of the Introit for the April 26 Mass:
"Gaudeamus omnes in Domino, diem festum celebrantes sub honore beatae Mariae Virginis boni Consilii Matris: de cuius solemnitate gaudent Angeli et collaudant Fillium Dei. Alleluia, alleluia."