Clear communication, empathy for the guests and having the resources to quickly fix or provide alternatives when issues arise is a fundamental expectation from a Super host.
Our party(4 adults, 3 kids) have different dietary restrictions and allergies. One of the primary reasons we booked AirBnb is because it would provide kitchen and other amenities like Dishwasher and with a super host for consistency and reliability.
David mentioned a few hours before our check-in that the dishwasher was broken and messaged "thank you for understanding". Not having a functioning dishwasher is a deal breaker for us given our tight schedule and dietary restrictions - where we had to cook all three meals with separate pots and pans every single time to avoid cross contamination. We also had bought our own utensils, pots and pans as well.
Moreover - David could not provide a clear estimate on when they can have it fixed. He said - he might have to order some parts or replace the whole dishwasher. Since we had planned to stay there for 5 nights - we could not afford to take the risk given the uncertainty and so we ended up cancelling the reservation.
Not all guests have the same needs and so when issues arise - I would request to try and understand what the impact of the issue is for the guest and not assume it to be trivial. I understand that something like dishwasher breaking down does not happen often and it can take time to fix. But - expecting the host to provide better alternatives is a reasonable expectation from the guest.