I am of a differing opinion but I am impressed by @Jude7 keeping a spreadsheet! The only sheets I keep and spread are the ones on the beds...
I don't pay any attention anymore to who writes what, when I check someone in I can tell if they love it or not. and what kind of guest they are. I know there is always room for improvement and as a result I am constantly improving slightly, tweaking, but I feel I will never be done. And I can certainly not please everyone, I just hope the guests who will like my place are the ones who choose it.
I used to obsess over the reviews and stars but I find it tremendously stressful, in case someone marks you down, and it is best for me not to observe it too closely. A quick glance is all I do. Should you perform badly Airbnb will let you know in no uncertain terms so there is no need to fret. But each to their own!
I do adore a good review however.