Most probably the host had already rented his studio to someone, outside Airbnb platform.
So, although i made normally my reservation, when i went to the reception for been guided to the apartment, the receptionist told me that he had no reservation under my name.
During a call, the host claimed that he doesn't know anything about an apartment in this building and that he has no relationship with this.
(Although to Airbnb he claimed that it was a misunderstanding and that i thought that i reserved a suite but he has a studio).
Anyway, bottom line is that this post is more or less fake and you can be exposed by arriving to the premises and discover that finally you have no reservation and nowhere to check in!
But most unfortunate is that Airbnb support center, bought the host's fairytale that it was a misunderstanding and they let this man continue using their platform without any consequences.
As a result, this man continues to have exactly the same post, on the Airbnb platform.
This is what actually worries me and make me feel exposed to any tricky person which has found a way to short-circuit the system.