They find the ways to keep the deposit. We did some cleaning, empty refrigerator, kept the plates etc in washer and turned it on (well, when we received the accommodation at that time washer was on, washing plates etc), disposed the bin in designated area. According to the house rules, we should leave the bed linen in the pillow and left them in the hall which might have given the look of mess.
I would suggest that reception should mention at the time of key-handover that we should do the proper cleaning before we leave the place. It was not mentioned in the house rules list displayed inside place.