@Venus41
Venus guests leave 4 stars when they think the stay was great! To some guests there is no such thing as 5 star, it is that perfection that does not exist. I have had 25 x 4 star reviews where the guest said how wonderful the stay was.......but, as good as it was, it wasn't perfection.
Don't get overly critical re guest reviews and don't pre-judge what they might write! You don't want to end up with egg on your face because you caned a guest in your review and they gave you a reasonable review in return.
Just accept that not every review is going to be 5 star, but, that is not a reflection on you. When you have a lot of good reviews a poor review says more about the guest than it says about you, just accept it and move on to the next!
Cheers........Rob