I reserved an apartment in Chicago in which the host tried to charge more afterwards and would not respond to my texts and emails. I tried to contact Airbnb customer service twice, to no avail, so I cancelled the reservation within the first 24 hours. Unfortunately, I was still out the $71 Airbnb fee.
It turned out to be an expensive lesson.
The host turned out to have a bad history with Airbnb back a couple of years, but the listing I was viewing showed he was a member since only June 2016.
Never again. I'll stick to hotels in the future.