Myself and my partner stayed in Frank's apartment for 3 nights and it couldn't have been better. The apartment is a decent size and was equipped with everything you would need for a comfortable stay. The location was fantastic - a stone's throw from shops and restaurants and 5 minutes walk to ferries to Valetta/boat tours/buses, however, as it's in a side street it's nice and quiet. As for Frank, prior to our visit he responded really quickly and was super attentive (I asked about the weather and he even sent me weather updates so I knew what clothes to take with me) and he arranged a taxi for us from and to the airport. This did not change while we were there as he sent us a message almost every day to see if we were ok or needed any info.
Excellent host, brilliant apartment, fantastic stay. I would stay with Frank again without a doubt!!!