Hand-guided treatment device for walkable surfaces, as for example floors, adapted to clean, to sanitize and to dry such surfaces and comprising a guiding body extended upward and ending with a control handle and joined below through an articulated element, as for example an universal joint, to a unit for cleaning, sanitizing and drying such surfaces, such a handle being provided with command means for such a device, said guiding body having housed inside it at least a control and command electronic circuit board, at least a first reservoir and at least an electrical pumping means, as for example an electropump, such an electronic circuit board being adapted to control and to command all the electric and electronic elements and/or components and/or means of the device and being powered by at least an electrical transformer means, in turn it being connected to the power grid through a power cable, said first reservoir being adapted to contain cleaning liquids, as for example water, and being connected with its outlet to the electrical pumping means, in turn connected to said electronic circuit board and to the electrical transformer, said unit being inserted into a stiff and shell-shaped casing, this latter being opened on its lower part and provided at its lower part with at least a free wheel, for moving the device, and being provided on its upper part with an upper opening, in correspondence of the articulated element, adapted to connect the component elements of the guiding body and said unit, this latter comprising at least a first cleaning, sanitizing and drying rotating motorized means for surfaces, one or more wetting and heating means, arranged on the upper and back part of said first cleaning means, at least a second cleaning means arranged into contact with the rear part of said first cleaning means, for cleaning this latter, at least a container (40, 52), arranged on the rear part of said first cleaning means for collecting the filth let to fall by said second cleaning means, said rotating motorized means being constituted by a cylindrical-shaped rotating tool, arranged in a rotating manner in the lower part of said casing and being provided internally with an electrical means of actuation in rotation, as for example an axial electrical motor, and adapted to actuate it in rotation in a parallel way with respect to the surface, and externally being provided on its longitudinal surface with an absorbent coating element, said electrical pumping means being also connected to a delivering element (46, 61, 73) of the wetting and heating means, for drawing the cleaning liquid from said first reservoir and to convey such a cleaning liquid to the coating element of the rotating tool characterized in that said electronic circuit board controls and to commands all the electric and electronic elements and/or components and/or means of the device on the basis of pre-set parameters, which are selected through said actuation and selection means and that said unit comprises also at least a sensor means for detecting the moisture, arranged into contact with the front part of said first cleaning means, said wetting and heating means comprising also at least a heating element (47, 59', 74), this latter including in turn at least a detection and regulating temperature means (58, 66, 80), and being adapted to heat automatically the coating element at a pre-set temperature by cooperating with the electronic circuit board thanks to the temperature detection and regulating means (58, 66, 80), constituted as for example by a thermostat or a thermistor of the NTC type, cooperating with the same electronic circuit board in such a way that this latter activates or not the heating, said moisture sensor means being adapted to detect the moisture present in the coating element, while the cylindrical tool rotates, by cooperating with the electronic circuit board, in such a way that this latter commands or not the additional wetting of the absorbing element through the wetting and heating means in the bases of a pre-set moisture value.