Once you get the hang of how the rating numbers work, it is actually rather easy: though all bars are shown, for their rating purposes Airbnb ONLY considers the overall experience.
You see that twice: once written up briefly under the 5 stars shown on the left side, when you scroll down on your stats page where under the stars shown it might say something like 5 star trips=66% of your trips - and then it comes up again, with a bit more detail on the right side, where the overall experience is highlighted in a green bar: you can click individually through all the different components listed on the left side , but they don't really matter. So I bet you got two 5 stars there for overall experience, then one 4 star for overall experience underneath, which means 2 out of your 3 trips were 5 star = 66% ! So there you have it 🙂
So here is a screen shot of mine - out of 12 "trips" 11 were 5 star = 91 or 92%.
Overall, it all will work out, you will get some experience under your belt and relax about the whole thing.
There are quite a few hosts, me included, who think this rat race for 5 stars is ridicilous and Airbnb needs to lighten up on it. As it happened to me, this one person with the 4 overall stars gave us 5 stars for all the sub categories, then "only" 4 for overall, go figure!
I would never ask or gently "guide" a guest to give us a good or great rating - that is up to them. I just do the best I can, and that is good enough.
Happy Hosting!
Annette