Beautiful and very clean apartment! Great location, everything you need in 5-10minutes walk (supermarket, metro, etc.) and in the middle of all the attractions in Madrid. (We also felt like it was a safe district!)
Your neighbours will live very closely to you, which can be a little loud sometimes, so maybe take some headphones with you just in case you generally have a "weak sleep" ;-)
Rebeca was very helpful and nice which made us feel at home :-) gracias! :-)