Me and my wife spent 3 nights in this nice apartment last week.
We did not meet our hosts in person, but Alicia answered all our messages immediately and provided us with some recommentations and useful info. We did not need anything more than this, really, so we were absolutely satisfied with the service.
The flat is right next to town centre, but it is just outside of the loud party areas, so:
1. it was very easy to reach all important monuments and restaurants/bars by walking a few minutes
2. still, there was no constant loud music and conversations coming in from the street.
The flat itself is perfect for two people, especially a couple as there is a double bed.

It is on the ground floor, but higher than street level, and thus, there was no problem with people walking by and peeking in from outside.
The apartment was nice and clean, including the kitchen and the bathroom.
If the above conditions seem to fit what you are looking for, I can highly recommend renting Alicia Y Julia’s place, and we would also happily stay there again when we return to Málaga!