What a great apartment! My friend and I stayed 5 nights at Gilads place in Malasaña and we really enjoyed staying there. It immediately felt like home - spacious, nicely furnished (green(with plants) and bright), fully equipped, and full of light due to the two big windows + two small balconies. Definitely a great Airbnb.
The communication was perfect and quick :-)
Malasaña can be crowded - especially at the weekend, but this street was -luckily- further quiet, and still in walking distance to most of the things. If you look for a place to stay in Madrid: We recommend this place :-)!