Terrible experience.
First the host didn’t respond for several hours to confirm the booking. Then the checkout time was so early. After handing over the keys, got a message after 5 days that you left the bathroom light on (which surely was not on), so now you need to pay £50 extra.
Being a host myself and hosting several places, surely the host should check the place straight after the checkout to see if there is any issue. Not after 5 days of checkout you claim for any issue.