We had a nice stay at Albert's Apartment. He was very helpful and flexible with our arrival times, since we landed and departed very early.
The apartment had everything you needed to cook which was nice.
It is located close to several busstops, so you can easily travel to every part of the island. And there are also some nice little bathing spots in walking distance if you don't feel like driving anywhere.
The street noises aren't too bad if you shut the doors/windows, but it can get quite hot. Unfortunately the ceiling fan is also loud. If you are a light sleeper this might be a problem.
Otherwise we had a great week on Malta!