Cleaning system comprising a hand-guided cleaning cart which comprises rollers and is movable over a supporting surface, for transporting and storing cleaning utensils for manual cleaning, wherein the cleaning system comprises at least one receiving device arranged at the cleaning cart and two or more different functional devices for at least one of operation and use of the at least one cleaning cart, wherein the functional devices are selectively connectable to the at least one receiving device, wherein the at least one receiving device and the functional devices comprise cooperating connecting elements, and wherein the functional devices comprise a base element, at least one latching projection which resiliently projects therefrom, and at least one blocking element which is movably held to the base element, wherein, when in a blocking position, the at least one blocking element is in contact against the latching projection and, when in a release position, the latching projection is out of contact with the blocking element.