Only negative thing is the keys. Should have spare or detachable key for electricity in case you wanna wash your clothes while you out (Of course it means higher electricity bill for the landlord and higher rent price for you). Seen people complaining that it is hot in the loft... Well yeah, obviously. My recommendation leave your windows and curtains closed day time, leave balcony door and windows closed while you're using AC.
Another recommendation for landlord - keep more stuff your guests leaving in the flat like long shelf life foods - cooking oil, sauces, canned goods. Dry products like sugar, coffee. More body care products like sunscreen, deodorant, haircare stuff.
Positive things - Flat is really clean, high water pressure, really hot water, you have all the equipment and utensils for cooking your food, washing machine, half balcony in the shade and other half in the sun in case you wanna get a tan without stepping outside. Good location, even if it looks a bit scary at first, but the location is really safe at night and well lit and also it is quiet so you can sleep with your windows open. 18 min walk from the beach, food stores 5 min walk, tabbaco store 2 min walk.
If I ever come back to Malaga I would definitely choose this place again.