We had a great stay!
Consider that there is no heating in the apartment for the winter months! The terrace is beside the row. Due to it‘s a residential area there are always people around but it‘s quiet and cars aren‘t passing frequently.
We enjoyed staying in Marsaskala and are happy we didn‘t choose Valetta. In Marsaskala there are way more residentials then tourists. The sea, supermarket, bus station and restaurants are within 5min walking distance from the apartment.
Busses go frequently to Valetta.