@Sarah3076
It's not clear which of Dan's listings that you've booked, and I don't want to alarm you, but several of his recent reviews have mentioned that Airbnb is not permitted in the buildings those guests stayed at, they weren't allowed to use some of the facilities (like the pool), and they had to pretend to be friends of Dan's if anyone asked. Which basically means, they're illegal rentals, and coupled with the host's lack of responsiveness, there is a possibility that they've either been forced to shut up shop, or they're in the process of being closed down.
The property you've rented however, may not even be in that same building, and could be absolutely fine. But if I were you, I wouldn't want to take the risk, and I'd be asking Airbnb to transfer my booking to a different host/property asap.