This is a guest who does not understand Airbnb and really should just book a hotel. They do not want to interact with hosts at all, they just want a "bargain" stay, hence the 'hostel' comment.
This is not about you, Sandra. You just keep being lovely gracious you in your home, and don't let ungrateful people get you down!
I started a thread last year about the poor "quality" of Airbnb guests, and how depressing it was. Quite a few people told me to raise my prices, and I'd get better guests. That seems counter-intuitive -- but I did that, and also removed Instant Booking. Much better guests this year.
p.s. except for a recent upsetting incident today....will post about that soon!!