Clean, modern apartment in a great location. On the Fuencarral shopping street, but quiet inside the apartment. Communication with the hosts was good, with fast responses to queries.
My only advice would be to take an eye mask for sleeping, as the windows have white blinds which do not block out the sun in the mornings. The lounge area is long and thin, this didn't bother us as we didn't spend much time in the apartment, but if you wanted to chill out as a group it might be difficult to find a way to arrange yourselves there