I had an unfortunate situation arise during my stay - a water contamination issue. The host did not alert me of the situation before check-in. I learned of the issue the next day from a third party.
I made multiple attempts to contact her. She responded 30 hours later. She was out of town and did not make arrangements to have someone available to assist her guests. The other aspects of the rental, cleanliness, location, etc., do not matter, if my health is put at risk.