What you see is the review/rating for just this one guest. He put a 5 on all of the individual categories but a 4 overall. It happens all too often. Sometimes, people just don’t think their stay deserves a perfect score and sometimes a guest has an actual reason that can’t be described by the individual categories and the don’t say anything in the written review either. In that case, you’ll have to ask the guest.
Your listing’s overall rating will show on the public page for the listing. If the listing is the same, it should keep your old reviews and ratings, but if you created a new listing, then the old reviews won’t be associated with the new listing, although they will show up under your host profile.