Hi @Caterina-Albanese0
This is a bad one, sorry to hear that some hosts may be doing this!
As a guest, you won't be able to see how many nights of the year have been booked at a listing (only the host can see this on their own account). It wouldn't help to look at the listing's public calendar either, because from the guest view you can't see whether nights were booked or blocked (and a host who is properly managing a regulatory booking limit, will specifically block nights to stay within the limit). In addition, you will also have a hard time keeping up with which city and area has which limit on nights (if any), and which hosts may be exempt from certain restrictions.
If it's any consolation, the integrity of the system very much depends on hosts not canceling guest bookings at random (Airbnb says it undermines "confidence in our community"). As a result, cancelation is a very unattractive option for a host, both in terms of penalties (fees & blocked dates) and ranking position. Here is the policy:
Host Cancellation Policy - Airbnb Help Center
It's probably easiest to trust the system and hope for the best! If you're particularly concerned about a specific booking that you don't want to lose, you could also message the host and let them know your concern. Hope it helps!
