On the marker of my point is more center but : 

Address of the establishment unit: Rue de Rivoli 42 is confirmed by BCE Public Search.
The PRAS indicated that "le site est soumis à des servitudes publiques de passage sur sol privé qui confèrent un caractère d'espace public à la rue de Rivoli. Way 150512666 is not on private propriety , it's public space (as the missing service road too). CadgisWeb indicate the street on the other side (from Place du Congrès , east of Jardin de René Pechère , and going back to rue Royale between 204 & 206). But there is 2 levels there ... Thinks also that address unit is not correct on Urbis for the Polfed-RAC building ; so maybe there is a foot entrance on the other side that is 42, need more survey.
