How do you precisely estimate the painting cost for a Hall Room in Bern with excluding ceilings, 1 doors, and 2 windows, measuring 5m x 6m?

Precisely estimating the painting cost for a Hall Room in Bern, excluding ceilings, 1 doors, and 2 windows, measuring 5m x 6m, involves spending CHF 328.00.

*) 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.