Shouldn't the cleaning fee only be a one time extra though? $119 for one night sure, but I'd rather pay $515 than $595 for five days. How would you add the flat

Shouldn't the cleaning fee only be a one time extra though? $119 for one night sure, but I'd rather pay $515 than $595 for five days. How would you add the flat fee to the nightly rate without knowing how long the stay will be?