This is a really nice place to stay: spacious and comfortable, with well equipped kitchen if you feel like cooking. We didn't: there are a lot of different cafes at just about 5-7 minutes walking distance (along the promenade). And a decent supermarket around the corner. A bus stop is 1 minute away (but if you wish to rent a scooter you'll have to go to Sliema).
Michaela is a very nice person, the communication has been almost instant every time! And her father was really helpful, he met us at the airport and drove to the house, and then showed everything in it. He even drove us half way to our next destination after our stay!
Marsaskala in winter is a calm and peaceful place, you wake up to the sound of church bells, and the sun shines through your window.
I recommend Michaela and her house!
Thanks one more time!