@Christine615,
IMO, the host did just about everything that he could have reasonably done.
- He notified the guest before her arrival that the unit wouldn't be available at 3 p.m. due to a late checkout.
- He offered to have the cleaning staff return after the guest reported a cleaning issue.
- He responded quickly to the guest, and I have some unconfirmed ideas why he stopped responding to the guest's phone calls, but he should have at least sent an Airbnb message.
I also probably wouldn't have offered a refund or discount for the rib bones, because her complaint sounds suspicious, and I already know that she's leaving a bad review. The guest initially refused to let the cleaning staff to return soon after checking in, and claimed that they cleaned the space themselves. Then after not getting an immediate replacement for the broken refrigerator she reports finding rib bones at the end of their stay, and requests a full refund of the cleaning fee.
I think that the author of the story thinks that Airbnb listings are like large hotels which have spare inventory that can be quickly changed out or in-house maintenance staff, and did not take into consideration that her rental was just an individual dwelling. If her refrigerator at home in New Jersey had broken I doubt that she would have been able to get a service technician to come to her home within 24 hours. Also, I believe that she thought that the host should have dropped everything that they were doing, and gone out and purchased a replacement refrigerator for her. Even if he had been an onsite host, there is no guarantee that another fridge could have been obtained and delivered within 24 hours. Hosts have lives and responsibilities beyond their rentals, also.
The guest's expectations were incorrectly amplified by Airbnb's marketing language. Once again, Airbnb has published something that is totally contrived from the viewpoint of someone who lives in a highly developed country that has several retail options and extended business hours. Had the problem with the fridge happened in a developing country it's very likely that it wouldn't have been resolved within the three days of the guest's stay. In many countries, stores close at 4:30 - 5:00 p.m. on weekdays, 12:30 - 1 p.m. on Saturdays and are closed all day on Sundays. It may take days before a technician or repair shop answers their phone or returns a call. Even if the technician/shop did respond quickly, it may take several weeks before a necessary part is shipped from overseas, or the host just may not have the funds available to purchase an intermediary substitute. Especially, if they are a local resident who is not renting out their second/vacation home. There are very few available options, and whatever is around costs a lot more than where most vacation travelers are coming from. For example, mini-fridges are not readily available in my area, and this is the smallest refrigerator that can be purchased at my local furniture/appliance store for approximately $790 USD. This is almost double the cost of a slightly larger refrigerator that's offered in the Home Depot online for $399. The HD stores are ubiquitous throughout North America and are open seven days a week, usually from 7 a.m. to 7 p.m. /9 p.m. (weekend/weekday hours).
For years, I have had in my listing details and house rules that it may take more than 24 hours to fix a problem, because I know how things work (or don't work) on the island. Now, it appears that other hosts will have to take steps to adequately set their guest's expectations.