The house is really nice and clean, the place is probably one of the best in Malta, both if you are looking for party (7 minutes walking to Paceville) or to visit the island (really close to Valleta and with easy bus combinations to go to the north).
Mario is a great host, he was really helpful all time, he even gave us a tour around his apartment so we could get use faster to the place and find buses and restaurants. He also gave us really nice advices about what to do and how. Chops, his dog, is also pretty cool :)
If we are going back to Malta, we will definitely try to go back at his house, totally recommended.