I was so dismayed to read this morning of an experienced host on the forum having their place damaged by guests who brought extras and had a party. This host has an entire place where they are not living on site. This host did not have CCTV cameras.
I had two tamper proof security cameras with DVR professionally installed for less than $1000. I urge every host to get, at the very least, a video doorbell like Ring or Nest and put it on the entrance to your rental. If you have an entire property with multiple ways in and out you need to ring the perimeter with cameras. If it deters you from just one incident they are worth it.