So I reached out to the hosts directly about this and they didn't acknowledge it so I'll address it here. this was my first stay with airbnb. When I walked into the bedroom it smelled of must and mildew like clothes that had been left in the washer too long before being dried, but it was just noticeable not overwhelming. That is until I was trying to sleep and could only focus on the musty smell of the sheets which were indeed the source of the smell. like I said when I messaged them about it they never responded with anything except a check out by 11 a.m. message. Also there is no way that they keep the thermostat at 74 when they are sleeping in the house. That room was uncomfortably hot, especially when coupled with the smell. When I asked them if the ac worked they said make sure the vents aren't covered up (they weren't) and then said I should maybe leave the door open for a few minutes. Anyways I'm at my 2nd airbnb stay now and it is by far better kept. I know all the other reviews seem to be highly rated for this place, but I found it to be a different experience.