Pros -
Great location in the center of old Palma. Within short walking distance to bus connections and the main sights.
The apartment was clean and well fitted. Check in and communication with Antonia and Natalie was very good. They responded quickly to any queries I had.
Very handy for one or two persons.
Potential Cons-
The stairs from the building to the apartment (only 7 or so steps) are very steep. This could be a problem for older visitors or anyone with mobility issues. This could be mentioned in the description. But it was not an issue for me.
The apartment is rather dark with not much natural light. But if you are out most of the time it doesn't matter.
It's also rather loud from the street, so advisable to bring earplugs.
Overall would recommend Antonia's place for a short-ish stay in Palma just for the super location alone...