Vanesa's place was just as pictured, very clean, plenty of room for the 4 of us (2 adults, 2 teenagers). It was HOT in Madrid the week we stayed there (mid June ), but the AC units cooled the place very quickly.
It is very close to lots of restaurants on Cava Baja. Plaza Mayor and Puerta del Sol, Palace were all easily walkable.
Check in and check out were very easy and smooth.
Note to Americans: the place is on the 3rd level up but is called 2nd floor (because 1st level is 0 or "Baja"... you're welcome!)