We stayed in Estefania's flat in late December of 2021. Her apartment is located in a very centric part of Madrid; in addition one only needs to walk for 5-7 minutes to get to a metro station. As you would expect from a such centric apartment, the area is busy and noisy at all times.
We found the flat to be large. The kitchen was equipped appropriately, although it could benefit from a blender and additional pots. Some toiletries were also included. The communication with the managing company was mostly appropriate and attentive.
Unfortunately, our stay was curtailed when plumbing issues with the flat resulted in one of the shower drains backing up -- which is clearly a hazard. A downstairs neighbour from downstairs also complained to us about leakage, in his flat, resulting from problems with this particular toilet. As we were in late December, this meant that a plumber could not attend the premises immediately.
The host agreed to an early check out as a result of this incidence.