@Abel4751 I would definitely not have said the guest left it in dirty condition based purely on what your cleaners told you. That's not a fact- it's hearsay.
There are many subjective ideas about what is "clean" and what is not. Both between hosts and guests and even among hosts, who may vary in their practical approach as to what to expect from guests in terms of clean-up.
As Andrew said, get your cleaners to take time-stamped photos if they feel it's an over the top mess.
And if you are going to cram 8 beds into a 4 bedroom, 2 bathroom place, with dining table seating for only 6 and the same in the living room, and list for 10, be prepared for lots of mess.