We were high-maintenance tenants and they took care of our every need.
We had a few issues with the toilet breaking and the showerhead/soap dish not being as advertised, but the hosts promptly and cordially took care of the problems the following day, and even boosted the water pressure for us soon after.
We lost our keys to the place, and they sent someone within 20 minutes to come give us a new set.
Customer service 10/10!