We loved spending a week in Paul and his wife's apartment. It was a great big apartment with room for both me, my boyfriend and my family. The apartment was even better than it looked on the pictures and the neighbourhood of Senglea was so great! I would recommend anyone to look for apartments in this area because it is interesting, cozy, soulful and without the noise and annoyance level of living in central Valletta. You can take ferry or bus to the center of Valletta, no problem at all.
Paul and his wife were super helpful and picked us up from the airport and took us back for only a very small fee. They were always very considerate and ready with good local tips for what to see and where to eat.
It does get a bit cold in the apartment in the winter (we went there for Christmas) so if you are thinking of renting in the coldest months remember to bring sweaters and good socks. There is a gas oven and air con but the apartment is old so of course its not fully isolated. Thats the catch with old soulful homes. They require good sweaters ;-)
All in all we would definitely come back. Malta was amazing and so was the stay!