Customer service as a guest was great. Host had a serious problem with their place, we moved out, host was being unreasonable on our request for a refund, but within a few hours of calling airbnb and providing photo proof of the problem, a full refund was issued. I couldn't be happier with airbnb's customer service (and especially the efforts of Holly at customer service, Patsy at Airbnb trip experience, and whoever else was on the team that handled my case). I've dealt with hotels, airlines, all sorts of institutions where problems sometimes arise, and I've never before seen such a fast and fair resolution.