We got Appartment B (same building, same floor, one more room)
Great appartment (spacious, convenient, well furnished, ...) in an awesome location (close to everything, direct from Airport with Alilaguna orange line to Rialto, ...)
We were very late at the check in (our plane was delayed for 5 hours) but thanks to a "fully automated" check in (keybox, codes, ...), we had no issue to access the appartment after midnight.
The appartment seems to be managed by an hotel with good & bad consequences : good is obviously quality (clean, numerous towels/soap, fast answers, ...) but no human touch (we have met no one ... not really the Airbnb initial spirit)