The flat is very lovely, relatively spacious, and well equipped. It felt light and bright, and stayed fairly cool though we did need to use the AC. The communication from the hosts was speedy, and they were helpful in enabling us to check in late. The only issue was the water pressure. It was so low in the bathroom that the cold tap barely functioned, and the shower was very under-powered, unless you put it on the highest heat in which case it was too hot. And don't plan on taking a bath in the (oddly positioned, but fun) bedroom bath. The water pressure is so low it would take literally hours to fill it.
But apart from the water issues, we did like the apartment and its location (very close to the ferry for getting to Valletta, and to useful bus routes).