Maria's apartment is perfectly located (just around the corner from the Real Alcazar and cathedral), clean, comfortable and very well decorated and styled. I especially loved the bed in the double room. It's firm but soft, similar to a Tempur bed. The air conditioners work very quickly too!
A few things to note about the apartment in case you're super picky but they're not bad things. There's no bathroom ventilation which I find to be common in Spanish apartments, the water pressure in the shower is a bit weak, and there's limited power points around the apartment so can be hard to charge multiple devices at the same time.
Overall, I felt like I was home in Maria's apartment. I would definitely recommend this place.