I just stayed some days in Venezia, Italy, which is known for their many canals and you could rent for a bunch of money a little boot (gondola) and for the real typical venezian moment you hire a gondolieri (bootsman) who sings while rowing. .. so .. The other host asked me if I also have stupied reviews 🙂 .. and we made many jokes about 'unreasonable' guest .. and one of his statement was also that tourist like to have an apartment with canal view but then complain about the singing gondolieri.
Myself, mostly when I get some stars downrating then it is because people have not read the description of my listing. I know that because I always mention 'as you have read in the description the room is X and Y' when I show the room to my guests. Some guests tell me then, that they missed to read that, and from others it is clear written on their faces (one of my rooms is really small and has no door, clearly with capitals explained at the begining of the descritpion and also in the house rules in the section which you see directly, without clicking on the 'expand' button).
And yeah .. sadly sometimes this people give me then only 1* overall (I guess they are angry about their stupidity 🙂 ) .. or they gave me a bad rating in 'accuracy' .. albeit everything is well explained .. but yeah, airbnb does not ask do you have read the description? when people rate 'accuracy'.
However, normally this 1* rating people don't give any explanation at all .. even not if I ask them politely, that I could improve myself. .. and airbnb support backs them up.