Overall, I have a mixed feeling.
Pros:
Good location: right in the historic center and about 30-minute walking distance from the nearest beach.
Useful advice from George so as to make the most out of my stay in Málaga.
Responsiveness of Arantxa and George while messaging them.
Cons:
On 3 days out of 4, the fuses would blow, so no electricity/light for a few hours until it come back (this happened for no reason since when the fuses blew, I was either sleeping or out - and the AC and all lights were off). It happened so many times that it became stressful in the end not to know whether there would be electricity or not.
The flat is quite old and would need to be repainted, so as to be more agreeable and cosy.