Location: The location of the apartment is perfect, only a few minutes walk to various bus stops and the ferry to Valetta. Lots of restaurants and shops are around the apartment as well.
Communication: Communicating with Frank was very easy and uncomplicated, he always answered quickly. On our first day, he booked a taxi for us from the airport to his apartment. On our last day, we were allowed to leave our luggage in the apartment after checking out and pick it up in the evening, because our flight was at 8pm.
Apartment: In general, the apartment was pretty clean. The bathroom was nice, the bed is not very stable and a little squeaky though. In the kitchen, you will find a few kitchen appliances (toaster, electric kettle, …). The air in the apartment can sometimes be a little stuffy, but after you open the window and turn on the AC (works very well!), it’s totally fine. There could be some noise during the night, since there is a bar right next to the apartment, but it’s really not bad - it didn’t bother us at all.
Overall, I would say that this apartment is great if you want to explore Malta - good value for money.