We had a wonderful week in Madrid staying in José Pablo's apartment, which is located just a few paces from beautiful Plaza Mayor and is just along the road from Puerta del Sol and the Metro/Cercanías station, so it's very central.
We loved having our own facilities to make breakfast and sometimes dinner and if we had any concerns, Minty Stay (the company José Pablo uses to manage his apartment) were very quick to respond to any queries during, before and after our stay. I do speak Spanish, but they can correspond in English too.
The flat was suitable for our family of 4 and it was easy to explore the beautiful city of Madrid from its central location.
We loved staying there and really hope we can stay there again when we visit Madrid in the future.