This is a lovely apartment with wonderful high ceilings and two beautiful balconies. If you're looking for homely touches then you may be disappointed, but the character of the building more than made up for that, in my opinion. It's a great place to explore not just Valletta, but all of Malta - we relied on the (sometimes rather exciting) buses, which leave just outside the city gates, so a 10 minute walk from the front door.
One small thing: I hold my hands up and admit to being a light sleeper, but I was still quite surprised at the early-morning rush hour noise that started well before 6am. Expect car horns and music blasting even at such an early time! The road, despite being small and resembling a back street, is in fact one of main thoroughfares into Valletta by car, and the narrowness of the road really makes the sound echo up into the apartment. If you're not a light sleeper, this may not bother you, but I feel it's worth mentioning as other reviews have mentioned how quiet it was, and this was not my experience.
Communication with Zak was excellent - he responded amazingly quickly and was always helpful. As we arrived in the evening, we had to get a taxi from the airport, but as we were not aware of this, Zak offered us a 50% reduction on the fare, which we really appreciated.