Very clean, new apartment with all necessary amenities. Location was brilliant, <5 minutes to the retiro park on a safe street.
Two things worth highlighting:
1. It is a ground-level apartment, with the living room door opening straight onto the street.
2. Because of this, there aren't really any windows which let in significant amount of daylight.
Neither one of these detracted from the experience of the trip, just worth bearing in mind :)