We stayed in apartments one week in October.
Pros: very convenient location, just 5 minutes walk to ferry to Valetta or bus stop. Kirsty is very open person and helped us with our questions about Malta. Also she provides a lot of tips just when you arrive. There is rooftop terrace, but we didn't use it as have kids. But if you travel without them - good place for evening relax when it's warm.
Cons: overall apartments maintenance could be much better (but also can be fixed for future), it was quite noisy in the evening because of people leaving around though it's not yet city center, furniture in bedrooms is really old (unless you like such style).