I was there with my friend from 12-18.10.2017 and we enjoyed Maria's Loft. It is as described, small and cosy, with everything you need, very close to the metro station and with good places to eat nearby. (Vicky very close to the Metro and good food)
Maria is a great host, she took care of explaining how to get there and made sure we have all the informations. During our stay we stayed in contact and she was very helpfull to recommend places to eat in Madrid.
I would recommend this loft to visit the city and I would book it again for my next trip :)