Maria was away, so we didn't have a lot of contact, but she set up a proxy to meet us and give us the keys. There was a bit of a hiccup in getting her on the phone at the airport, but check-in went okay.
We highly recommend Maria's place if you are looking for a well-appointed flat in a wonderfully historical, centrally located part of Valletta. We were literally two blocks from the most central part of the old town. They have modernized the interior of this building with a lift (unheard of!) and all the appointments you would expect in a modern apartment, including a washer, stove, good sized refrigerator, etc. MANY outlet plugs, which so many places don't have. Do be aware the flat is "cozy"--bath is nicely appointed but a bit challenging to navigate with the door closed, and main area is a bit smaller than the pictures suggested. One of us used the pull out sofa as a bed, and it is not a great night's sleep (pretty hard), but it is serviceable enough. The main bed is very comfortable.
Overall, we found it a great value for the price and just can't say enough about the location!