Open Tender For The Contract Of The Cleaning Service Of The Premises Used As The Prefectural Headquarters Of Lecce And Representative Premises For The Period Of 24 Months Pursuant To Art. 71 Of The Legislative Decree. 36/2023 And In Compliance With The Minimum Environmental Criteria Referred To In The Decree Of The Ministry Of The Environment And Protection Of The Territory And The Sea Of 01.29.2021