Really nice place. Clean. Comfortable beds. Good location with active scene and good food around. Easy access to Gran Via and not to far walk to Mercado de San Miguel, etc.
Malasaña is a vibrant neighborhood which can get a bit noisy with the buildings like canyons but that was known to us. The apartment has the bedrooms in the back which shields pretty well from the noise and the ceiling to floor windowed doors are well insulated blocking out most the sound.
There is no elevator but the apartment is only on level 2 so it’s not too bad, but remember in Spain ground floor is level 0, so level 2 is up 2 flights of stairs.
Definitely recommend this place just keep in mind Malasaña is a colorful neighborhood but if that’s what you want this apartment is great!