This was a great space with ease of access to the bus/train station, and a comfy bed + very usable kitchen and bath. Paula was easy/quick to communicate with, and we loved this apartment for our last night in Madrid.
The area has lots of night-life and many good shops and restaurants, but it was still a bit noisy for our personal preference--just to let anyone know who may have trouble with sleeping. Like most older buildings in Spain, there are a few flights of stairs to haul your bags up, which may be hard for some. Otherwise, I'd highly recommend it to anyone just passing through, or staying a while! :)