Why didn't we hire an exterminator? I never even thougt of it. Thinking now I don't feel it was our responsibility to exterminate this guy's place, and he said he would refund our money which was airbnb's policy.
Of course it wasn't your responsibility. But if you'd done that you could have spent the next few days hacking on your project instead of looking for lodging, and you might even have been able to collect the exterminator fees from him.