The appartment is uniquely furnished and very spacious. You can walk to the center of the old town by foot or take the bus which is not far away. We always walked (ca. 10-15 min til you reach the Triton fountain). A mini markt and a supermarkt is nearby but we highly recommend to have dinner in the city, it's very good! There is famous restaurant called "Fumia" close by, but you will have to book in advance - it's very popular! (We didn't unfotunately :/)
Andrea is very helpful and also very quick with her answers. We couldn't meet her in person, but Carmen the householder who welcomed us and explained everything. All in all, a very nice place to stay (also with a child of 15 months), the only thing that is a bit annoying is that the neighbour owns some chickens and a rooster that takes his morning duty of crowing very seriously which you will hear in the bedroom situated closest to the very nice patio. But apart from this, it was a very nice weekend trip to Valetta!