Great experience.
The housekeeper waited for us, gave us the keys and showed the house at the time we told we would arrive. We didn't meet the host in person, but she kept in touch with us on Airbnb and was very kind and helpful.
The apartment is as it is described, has a good atmosphere, was very spacious for our family of four. The main kitchen is well equipped, we were able to cook there each day and have our meals outside in the courtyard. We were provided bed linens and plenty of towels. The apartment does not have AC, but there is a standing or ceiling fan in the rooms. Malta uses UK-type electric plugs -what we were not conscious of-, but there were a few EUR-UK converters in the house, which helped a lot.
The house is in a central, but not busy old residential street in Sliema, within about 5-10 minutes walking distance from both St. Julian's and Sliema bays.