[bitsnbytes]

>Where do you draw the line.

when it becomes damage versus expected usage would be a good line just like hotels have been doing centuries.

basic cleaning services such as cleaning linens,dishes,furniture,light dusting, basic floor sweeping ,etc.

you destroy the property or require excessive cleaning because you had a party with excessive dirtiness like spilled drinks on walls , linens thrown all over the place and stained, etc. then include an abusive charge.