should you rent to someone who has one bad review?

[Noorhayati0]

I received a rental request from a guest that has a total of 7 reviews with one review that says the guest left the house dirty.  Their other reviews short with no complaints but given as a host it can be risky to leave a bad guest review not sure if I  should be reassured by them. Any advice on renting to a guest with one red flag review would be greatly appreciated.  Also, they've already asked for a late check out as well.  Thank you!

[Zheng49]

Bad review as in...what? 4 stars? 3 stars?

For me, if they have 6 good reviews, and 1 bad review, I'd be okay with that unless that bad review is the most recent one. 

[Mike-And-Jane0]

@Noorhayati0 Hosts views of what qualifies as 'dirty' vary massively. Occasionally we had crumbs left everywhere in the lounge but whilst it looks bad it needs hoovering even if there are no crumbs so we wouldn't mark the guest down.

I wouldn't worry too much if it is only 1 in 7.