We (2 adults+3 kids 16,19,22) stayed at Mark's house at Marsascala for 1 week.
We found everything to be exactly as described. The house was very clean and also the key lock information worked fine. The kitchen has everything you need including washing machine. The kids enjoyed watching the Star Wars DVDs.
Although the location is a bit of driving distance in particular if you want to go to Gozo or Comino, we still recommend it because the area is so much nicer than the big hotel complexes in the north and east coast.
Mark was extremely responsive and all our questions were answered in short time.
Patrick helped out with a small repair also extremely fast.
We enjoyed a perfect vacation and will recommend to our friends.