We spent a week in the apartment and everything went well!
The aircon definitely saved us from the heat of August :) So that was great to have it. The area is quiet, away from Valetta tourists crowd, which is what we were going for. Just 2 minutes walk to the bus stop to explore other parts of the island and 10 minutes walk to the ferry for Valetta.
The host, Philip, was helpful and quick to contact if needed. Thanks again!