I’m probably one of the most suited posters on here to answer this question. I have exclusively lived in Airbnbs for the past 18 months. About 10 or so - I’ve lost count (don’t ask). From Devon to Warwickshire.
I have a dog so have had to stay at dog friendly property. Not one property has stunk, had stains or been unhygienic. Majority of air BnBs have had weekly cleaners come in followed by a deeper end of rental clean.
If you are going to a highly rated, well maintained property you have absolutely nothing to worry about. We inquired into buying one of property in fact.
I am a neat freak and some on here will say I’m used to the stench. Just not true.
We have been paying £1k/week so I’m sure cheaper options may not be as well maintained.