What a nice place, and I can’t imagine a better location if you like the beach! Amador is an excellent host, and will absolutely be willing to do whatever is necessary to ensure your stay is comfortable. Be mindful - if you are not a fluent Spanish speaker - that he doesn’t speak any English, but he does a great job translating text messages, and responding extremely promptly.
The area where this apartment is located was perfect for me, as I had already spent some time in the historic district of Málaga, and wanted a place that would be near the action without being right in the middle of the bustle and chaos. Just keep in mind that the apartment is barely outside of the historic district boundary, and will take a little walking and a couple large road crossings to get to that area. If you are interested in seeing the Alcazaba, or Gibralfaro Castle, this is a great location, as it’s just south of both.
If you are new to Málaga, Amador will be a perfect host. This is especially true if you speak a little Spanish, but even if you don’t, I’m sure he will give you a map and make an effort to point out some spots of interest, as well as make some restaurant recommendations. I highly recommend this great deal of an air bnb for your Málaga visit!