I am hosting on airbnb for more than 2 years. I can't express how disappointed I am as a host by my guests. While in the beginning, I seemed to deal with normal people, now that the site got more expensive, only rude, clueless people seem to be using that website. I have zero cancellation rate as a host; all my apartments are exactly as shown and cleaned by professional crew. However, I deal with guests who call me drunk at night demanding parking that is not even advertised on the listing; guests smoking in the apartments even though we have non-smoking in the house rules. Recently, a guest attempted to hack (!) the building router that produces wifi for the all other tenants by installing his personal password on it. We prevented it, sending a technician. The guest left a review saying "apparently wifi was shared and others in the building didn't like it". What kind of a person expects NON-SHARED wifi nowadays and, after not receiving it, writes a negative review? Wifi by definition is a shared facility, even in Marriott or Hilton.
I don't know what hosts will soon remain on airbnb, but their reviews policy is clearly encouraging scams like that to put down good hosts. This encourages hosts to offer lesser quality services or not leave any reviews to good guests, since guests will write whatever, anyway, without much thinking and knowing that the host won't see their review or have any recourse.
On a positive side, airbnb allows me to earn 25% net extra income vs my long term rentals, this being the only reason I work with and continue being listed on that website.