Upon the day and hour fixed for the hearing held pursuant to this Article, the City Council shall hear and pass upon the report of the City Engineer, together with any objections or protests which may be raised by any of the property owners liable to be assessed for the work of making such repair and any other interested persons. Thereupon the City Council may make such revision, correction, or modifications in the report as submitted, or as revised, corrected or modified, shall be confirmed. The City Council may adjourn the hearings from time to time. The decisions of the City Council on all protests and objections which may be made shall be final and conclusive.