We stayed in Malaga old town for 5 nights, and loved every second. This place, although slightly small (but with a very large outdoor roof terrace), fit the bill for a couple that are there to explore and go out and about. We did enjoy relaxing on the terrace in the morning, or later in the evening after we had returned home, but it was very functional and served the purpose.
Be mindful that it isn't accessible (you need to use stairs, even with the lift, for anyone who needs step-free access).
The service we received from Ana was really brilliant, she was highly responsive, very friendly, and even accommodated a special request to put some beach towels in the flat as we were travelling with just backpacks so had no room.
Highly recommend :)