This boutique hotel is brilliantly placed to explore the old town (La Latina) and many attractions are within walking distance. Casa Baja is full of bars and restaurants but we weren't disturbed by any noise in our room.
The room we had was a little small, really just a bed with nowhere really to chill and spend any time - but the shower room and toilet were a good size and very modern.
We paid about 200 euros for three nights, and used it as a base to sleep, wash and change only. But then Madrid has so much to offer, do you really need a lot of space when you are out all the time?