Carmen is very hospitable with a lot of information.
She lives in the same building as the apartment which is reassuring for if something goes wrong.
We had zero problems with the flat itself, which was clean and tastefully decorated.
The main floor is small and perfectly formed. The upstairs rooftop is really good and better than it looked in the photos.
There is plenty of space to eat and also it would be great for sunbathing, there are deckchairs and sun loungers there.
The neighbourhood has bakeries, fruit stores, butchers and supermarkets within easy walking distance and is fairly quiet in the evenings. There is free street parking but it can be difficult to find a space, especially later in the evening. We found a public valet parking garage more to the north on Calle Cristo de la Epidemia, a 10 minute walk from the apartment for those days when we arrived home later in the evening and couldn't find a parking spot. Prices vary but should be around 15€.
The city centre is walkable from the apartment but we found ourselves catching a bus many times to save time, there are main bus routes nearby which will take you down to Plaza de la Merced or even to the main train station.
I would happily stay with Carmen again.