This place is very nice for your short-term stay in Madrid. It is very clean and tidy, well connected to the city center, with very pleasant surroundings.
Julian is a great host! Very friendly and nice. He is disposable for any questions and/or assistance regarding your stay, providing you also with the maps and everything you need for your walking around. Very kind with offering you a breakfast & coffee the first day of your stay!
All in all-very pleasant and recommendable!