The apartment is spacious and very comfortable. The kitchen is very well equipped and the electric boiler works perfectly (which I know from experience is not always the case in Maltese houses). The bedroom has a lot of natural light (though, the curtains will shut everything off if you want) thanks to the nice back terrace, a detail we really ejoyed.
We spent some time working from home and the wi-fi was definitely up to the task.
The location of the house itself is phenomenal. You have everything at close reach, from supermarkets to restaurants and bars. You can catch the bus very close by and basically go everywhere on the island or you can easily walk to St. Julian or Sliema ferries. The best thing is that even if it's in a very central location, close to everything in Sliema, you still get a tranquil night sleep without the excessive outside noise of other areas.