First impression of the house: it is huge. Probably, would suit more a group of 4-6 people. The way to the toilet at night is quite some travel :D
The house is incredibly authentic, with mostly pretty antique furniture. This has quite some charm, but I really didn't like the smell. The kitchen and the bathroom are pretty new, though. The kitchen has more or less everything you might need to cook yourself with lots of tableware. The bathroom has a washing machine with washing pods that you can apparently use for free. You can also dry your laundry outside in the inner yard.
As written by someone before, the main bedroom is pretty loud, especially in the mornings. But I guess it's applicable to any room facing the street on the island of Malta. We just had to adjust our schedule to wake up before the loud people start driving around :D
The location is pretty fine. If you don't mind walking 10-15 min to some remotely located bus stops, you get direct bus connections to most parts of the island. And Valetta is easily reachable on foot (30 minutes of nice walk).
To conclude: a pretty good house, but a bit way too big for a couple.