The apartment is in the center of Madrid near Puerta del Sol. So really good situated if you wanna have short ways. At night it is really loud and lots of people are passing by, so please count with that.
The apartment has all you need and is well equipped.
We never communicated with our host directly it is all managed via an agency that takes care of it. The check in and check out was flexible and easy.
One point: The bathroom needs a maintenance check as the smell was really disgusting, we think that the drains or something caused it.