How do you estimate the painting costs for a Children's Room in Lausanne with including ceilings, 2 doors, and 1 windows, measuring 4m x 4m?

Estimating painting costs for a Children's Room in Lausanne with including ceilings, 2 doors, and 1 windows, measuring 4m x 4m consider costing you CHF 387.00.

*) The calculations are approximate, based on a room height of 2.4m, and include one coat of paint. The price covers only the labor, excluding any services or materials.