Carmel's place is an easy walk to the airport, so what is the best thing going for it? Location, location, location. We had a 5:00am flight so had to be at the airport by 3:00am this would not be possible without an air BnB close by.
The room is basic and just as described. A private bathroom with shower makes it an upgrade over a shared bathroom. There is a common kitchen that appeared to be well stocked for anyone so inclined or staying longer. For those staying longer than a single night there is not much going on in Luqua, however the area is well served by busses and Valletta is an easy ride away.
But if you have an early flight and Malta has a number of early flights out this location is ideal.