Maria and her staff were helpful and supportive throughout, and were glad to assist with any questions or needs that came up. On the day of our check-out, Maria's staff went out of their way to provide us with keys for the front door (so we could store our luggage in the hallway), giving us towels for the beach, etc. This was very friendly, and greatly appreciated.
The apartment is well-kept, comfortable, and centrally located. The stairs to the upstairs bedrooms are a bit steep and narrow - not a problem for most people, but maybe an issue for elderly or injured tenants. However, there is a bedroom at the ground floor level as well, so this could provide an alternative.
Future tenants should bear in mind that all windows - as is clearly shown in the photos - open onto walls, so the inside of the flat can be a bit dark at times. We visited in April when the weather was not that warm yet, and felt cold in the flat at times (heating is available) - I imagine that this could be quite a relief in hotter months.
Overall, Maria's place provides a great base to explore Malta, and I would definitely recommend the apartment to future travelers!