Overall experience is 2.5 stars. I do have to warn any international travelers about the check-in experience as it will be extremely stressful if you don't speak Spanish or if you are coming in on a later flight. After giving my flight details over email, I was told to call (specifically instructed not to text) when I was about 30 minutes away. I called when our flight landed (around 8 pm) just to be safe and spoke to a woman who didn't speak English very well. Between my limited Spanish and her limited English, I found out that no one could meet us at the apartment and that I would have to pick up the keys from another address and then go to the apartment. I was given an address where I could pick up the keys, but because of the language difficulty, the street name was incorrect. To make a long story short, I spent about 50 euros on a taxi ride with several stops and wasted an hour of time. And lastly, when our taxi finally brought us to the apartment where we were staying, the taxi driver let us know that the apartment was somewhere in the plaza, but he couldn't drive us there because it was a pedestrian zone. The number of the apartment complex is not easily visible, especially late at night, so we ended up asking random strangers on the street where the apartment was and eventually found the apartment. I would advise any travelers who are using this airbnb to ask for a diagram of the plaza to ensure that you know where you are going.
In all fairness, the place itself was extremely clean, modern, well-equipped, and centrally located for sightseeing. Since it is right on the plaza, it was noisy at nighttime, so I would advise you to bring ear plugs.