How do you accurately determine the cost to paint a Bedroom in Bern with excluding ceilings, 2 doors, and 2 windows, having dimensions 6m x 9m?

To determine the cost to paint a Bedroom in Bern accurately, considering excluding ceilings, 2 doors, and 2 windows, with dimensions 6m x 9m, you need to pay CHF 448.00.

*) 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.