The apartament is nice, very clean, comfortable, with a modern design and great atmosfere. It has everything you could need. I would say is better than a 5 star hotel and it has a beautiful view from the bedrooms. The location is good - quiet, close to the ferry (so you can get easily in Valletta) the bus station, and some good restaurants.
Simon is a great host, he helped us with informations, reserved us a taxi and even made some grocery store shopping for us. I was impressed by his hospitality.
Maybe we should have booked more days, because we enjoyed staying there. I would recomend it to anyone.