We had a great time in Maria's place which is perfectly located in the old town of Valetta, close to restaurants, sights and transportation but still quiet.
The apartment was super clean and had air condition and nice furniture. We definitely recommend this place for a couple or two friends. We were three friends and it also worked for us.
The communication with Maria and the cleaning lady was super friendly and responsive. Maria allowed flexibility both with our arrival and departure time.
All in all a good experience.