Of the dozen or more Airbnb experiences I have had, this was the worst. The location is great, the apartment is good. But I expressly booked it because it had air conditioning, since there was a heatwave the week I was staying.
A few hours after I arrived, I contacted the host because the apartment wasn't cooling, and I was happy that she responded immediately. The man from the building looked at it, pressed some buttons, said it was fixed. It wasn't. It didn't drop below 27C that night. The next day, I contacted again, quick response, same guy came, pressed buttons, said it was ok. It wasn't. It didn't drop below 26C that night.
The third day it stopped working completely. Texted host, immediate response, same man came, pressed buttons, and said that when it's hot sometimes things don't work. Given that it was an air conditioner, this was not ok. I immediately requested to cancel the rest of the trip and requested a refund, given that an essential amenity was not provided. No response for 24 hours. It didn't drop below 26C that night.
I finally left on the morning of the fourth day after filing a complaint with Airbnb. I wasn't so much concerned with a broken AC - these things happen - as I was with her complete lack of concern or attempt to contact a qualified professional to fix it. I even messaged her why she made no attempt to have the AC fixed, but she never responded. It was mean and it was insulting.
In short, even though AC isn't necessary most times of the year, I hope you will avoid this apartment and this host due to the lack of concern for her guests. She really made me feel insignificant. And, if principle isn't enough to deter you, know that I soaked that mattress with my body sweat for four days straight. It will take some time for the odor to disappear, but the excretions will remain.