Upon the conclusion of the hearing, the City Council shall determine whether the property or any part thereof, as maintained, constitutes a public nuisance. If the City Council so finds, it shall adopt a resolution declaring such property to be a public nuisance, setting forth its findings and ordering the abatement of the same by having such property rehabilitated, repaired, removed or demolished in the manner and means specifically set forth in said resolution. The resolution shall set forth the time within which such work shall be completed by the owner, in no event less than thirty (30) days. The decision and order of the City Council shall be final.