The apartment is in a good location, just behind the Congreso palace 50m from the underground, shops and restaurant.
All the amenities were in working conditions, the shower cabin is a bit too tight but still ok.
Reply time with queries should improve; before and during my stay was slow, I got the full address of the apt. via text message just few minutes before arriving in the Congreso area, when I asked for it more than 24 hours in advance, same to confirm my early check-out.
Beside that a good stay.