Hi @Colin sorry for the late response, I just wanted to double-check the logic.
We sum up the scores and divide by the number, we then round to the nearest half star. So for example if you got 5,5,5,5,4 it would be 24/5 = 4.8 → 5.0.
When we look at Reviews we are likely to make it simpler by having an overall rating and then a sub-category rating system. This would be for both Owner and Sitters. This is something we plan to look into later this year.
Thanks, Ben