Wonderful apartment, wonderful host. We stayed at Maria's apartment for a full month.
Maria has thought of all the things you might need during your stay, among them restaurant recommendations, various kitchen utensils, pillows with different softness to choose from, an extra set of bed sheets and towels, and so on. Both the bed and the sofa were of good quality and very comfortable. You can tell that Maria cares about the apartment and her guests.
What's worth noting above all was Maria's excellent communication. Whenever we had a question or a problem, Maria was quick to answer and so everything was resolved without delay. During the first week of our stay, Maria and Jose were in the city, so it was no problem for them to come by and assist us (Thank you for bringing us locally handmade sweets, Maria!).
The apartment itself was in a full five stars sparkling clean condition. We cooked a lot, and the kitchen had everything we needed for it. There was enough space for cutting etc. Only the hotplate was a bit tricky to use, as the pans heated up much more in the center. We much appreciated the very reliable dishwasher, though.
The location of the apartment is just perfect, as the street is narrow and cars barely fit through it, making it a quiet oasis from the usual city buzz, yet the bars and restaurants are just around the corner. As typical for older Spanish buildings, the walls are a little thin, so we could occasionally hear the neighbours. This wasn't an issue for us, though.
We'd book Maria's apartment again anytime.