We didn’t meet Mercedes, but we could send messages to each other through the Airbnb.
She was very kindly, when we arrived from the airport late evening, his friend was welcomed, and some mineral water, beer, chips and fruit awaited us. On the last day she allowed us to pick up our luggage later, because our flight started in the evening.
The apartment is not big, but for a couple , + a big golf bag  , it's enough, it is simple but modern and very friendly. It’s 10 minute walk from the historical city center indeed.
Basic things like coffee, tea, sugar and salt were in the apartment and hairdryer too. Fortunately, the house has an elevator so heavy packs we were able to carry up comfortably to the fourth floor. The teracce is on the top seventh floor, with nice views indeed, but we can’t use it, because we were away from morning to late evening, then it was cold, windy April weather.
In summary we felt great in Malaga, we would like to come back again, and we would definitely recommend Mercedes’s apartment to stay here! Thanks!