Alejandro's place is a true Airbnb rental in that it's actually his home and not some corporate rental. The bed is actually comfortable, kitchen has complete and usable appliances, plates, cutlery, etc. His place was overall clean (not spotless if you have ridiculous standards for this).
The two flight walk-up is on narrow winding stairs so keep this in mind if you have physical limitations and the street is moderately steep to walk up and down. Shouldn't be a problem for most but it's fair to mention. Most nights it's quiet at night but it was noisy Friday and Saturday night from activity on the street.
There was some restaurants in the area but mostly I went elsewhere to see the sites. Metro stations are close (literally minutes) and so much is walkable (Prado, Plaza Mayor, Royal Palace ... ) that it's a great location and I prefer the quiet to be able to sleep and get away at night.
Check in/out was easy. I definitely recommend and would stay again if I go back to Madrid