We stayed at Josephine's apartment for a week. Communication with Josephine was excellent throughout.
The apartment was spotlessly clean, and well-located in a quiet neighborhood - yet still close to everything you'd need. Within a 5-minute walk, there are a number of bars, cafes, restaurants, small supermarkets and the harbour.
We hired a car and initially struggled to park near the apartment. However parking on Triq Bugibba or Dawret Il-Gzejjer (also really close by) was much easier.
If we return to Malta, we'd happily stay here again and would certainly recommend the apartment.