This place is a little bit small BUT it is in excellent position at the center of Madrid. Note that the bedroom is at attic and accessible via a ladder as illustrated in the pictures and in order to get to the flat it has 4 floors of stairs with no elevator. The nearest metro station & Gran Via is only 3 minutes on foot. Moreover, most of the sightseeings are accessible on foot as well (e.g. Cibeles at about 20 minutes).
The neighborhood -Malasaña- is really nice and lively with many bars & restaurants but this does not affect the place which is really quiet.
Cristina is very good at the communication - replied instantly to all my messages and very helpful with the check-in/out!
All in all, it is ideal for 1-2 people and I recommend this place firstly for the superb location (!!!) and secondly for the good communication. Thank you very much Cristina!