This was obviously an illegal airbnb. The address given is not the address for the apartment, and upon check in you're warned not to reveal to building management that the apartment is being used for this purpose. This is obviously a group or company who does this professionally by misrepresenting the location of the airbnb. Another issue is if there is a problem, such as water leaking into the bathroom from the HVAC unit, there's a whole song and dance between them and building management to not reveal the nature of the unit.
If that's all ok with you, and it's worth it to save a few bucks, then go ahead. Obviously airbnb as a platform doesn't care about this sort of behavior since there are literally dozens of rentals listed as being at one location but in reality are somewhere else completely. Feels like a safety issue to me.