Maria is a great host and the apt is one of the best solution if you want to stay in the center of malaga. It consists of three floor (first one with living/kitchen, the other with bedrooms) and also there is on the top a small terrace where you can chill out.
The center (cathedral, Alcazaba) is 5 min walking, in 15 minutes you can reach Malagueta beach.
During the weekend is not very quite, but remember that you are in the centre of an andalusian city full with a lot of students.