Location, location, location.
This is a greatly located apartment with a major metro stop less than 1 min walk.
Melvin was great as host. Readily available and catering to my request (asked for fan for the bedroom and it was delivered within 30mins)
The apartment is air-conditioned (a must for Madrid) and has a decent size.
The only drawback I may have is the low level of natural light but it wasn't an issue since my wife and I were out and about.
I fully recommend.