This really is a very nice apartment in an upcoming area (Lavapies) close to the centre. Everything is within walking distance but two or three metro lines are close by as well. As is the train atation (Atocha) and the Park (Retiro).
The house itself is very comfortable, the available space is used in a very clever way, everything seems well thought about. Also the terrace is very nice, with a great view. Quiet at night also.
Communication with Vin and in our case the caretaker went very smooth all the way, which really made the experience even better.
I'd recommend this place for sure and when I come back to Madrid I'll start by looking if this place is available.