The place is perfect, in the most central area, on a pedestrian street, close to a metro and bus stations (3min walk) but is still quite enough to be able to sleep. The supermarket-Mercadona is right next to the building. The building is very nice with a doorman that helps you and makes you feel comfortable. The place has everything you need, even shower gel and shampoo, water in the fridge-small things that make a big difference!
Laura and Lucia are perfect host, they answer promptly and give nice suggestions depending on your interests. They even welcomed us with breakfast:)
We stayed there with a baby and a toddler, so they provided a baby bed for us as well.
The only negative thing is that the sofa bed is not very comfortable.
All in all we would definitely come back and recommend it to anyone.