Irene's house is very easy to reach from the airport via public transport. You don't have to walk much from the nearest bus stop. The check-in was also very easy to arrange as she is often available.
The location is pretty good, there is a supermarket very close by and bus stops going in every direction, which makes the whole island of Malta very easily accessible by public transport from there. There is even a beach (Balluta Bay) which makes it very practical to go for a quick dip in the water.
Irene is a very friendly person who has been living in Malta for more than 17 years. She will certainly be able to give you good advice on what to do, where to go and where the locals go, as she did to me.
The room was very comfortable and the AC is very efficient. Despite the hot weather in Malta, I didn't suffer as much from the heat there as I do in Northern Europe. There are also plenty of bathrooms around the house (I think each room has their own), so you probably don't have to share.
What made my stay so special was the house's traditional architecture and interior design. You get a whole different feeling about Malta than when staying somewhere more modern.
I would recommend staying at Irene's and would do so myself again if I had the opportunity.