We arrived in the evening time & received a check in text from the host with a comment buried in the text: "please do not put a/c unit lower than 71 as it could freeze up the unit." This was not noted in the home's listing. The next morning it was warm at 74, being that the home is old, we didn't realize there was a big problem until we woke from a nap just before noon, the thermostat read 77 and that's when we reached out to the host. The host sent a repair man to service the unit. We had to get ready for an event we planned to attend that night & we were melting while a stranger came & went through the home to fix the a/c. We were shocked when we saw the condition of the home's a/c unit, it is old & filthy. There is no way the home doesn't have routine problems, very disappointing (we realized why there were box fans stacked in the primary bed's closet). It was a miserable afternoon at the home. The repair man told us it would be bedtime before the home would be cooled. It never got below 72. It is noteworthy to mention that the home has uneven floors throughout, the bathroom has a loose and high threshold, the tub is moldy with a filthy shower curtain liner & the tub is super slippery. We slept poorly due to it being hot & the primary bed's mattress having a 4" piece of (upside down) egg crate foam. We asked host for a refund of 1 night (of the 2) & were told NO. Host said we should have notified them sooner about a/c & we should have thanked them for a/c repair.