I absolutely loved the stay in Raul's apartment and not sure even where to start from but:
amazing location in proximity to key sites but also all shops, restaurants, markets, etc. Super safe and not noisy at all.
Apartment super clean and so nicely organized. Someone really thought through about all the details: comfy bed, enough space for clothes and toiletry, well equipped kitchen, a working desk that was really useful as I needed to work remotely during my stay, etc.
Finally, Raul was a great host, he made sure to be available when needed.
Overall, a place I will definitely book again when in Madrid. I travel a lot and stay a lot in apartments and hotels, and this is definitely a place to come back to.