My husband and I stayed here for part of our honeymoon. Nice flat, amazing location -- we walked all over Madrid from here. The street is lively and busy but you dont hear it from the apartment at all.
That being said, we were led astray by the photos thinking we would have some street views-- the balconies are facing an interior courtyard with no views but into your neighbors apartment windows. The building has an intercom outside on the street so you can buzz up friends (a nice feature) but we had the buzzer go off repeatedly 3-4 different times by someone trying to make a delivery elsewhere in the building or just people messing around, which was irritating and offputting.
There has been a recent management change and the upkeep of basic amenities has taken a hit -- no soap at sinks; no body wash in bathrooms as described; toilet paper missing from WC and had to be retrieved from others; fireplace is off limits though noted as an amenity; lack of care of drains so shower/sinks backed up with prior tenants' hair (GROSSSSS) that I ended up cleaning out; NOTHING in fridge so you have to get anything you want at the store (though there are many nearby, they don't open until after 12:00) and not even sugar for coffee in the pantry...just little misses that could easily be avoided if that extra care was put in.
We ended up paying ~$360/night with fees and I would NEVER have paid that much knowing what would be missing from this apartment. Also, there is no elevator/lift, so you have to go up 3 flights of old, slick, warped stairs with your luggage, which was alright but should absolutely be noted in the apt description.
Overall disappointing in a city where there are endless places to stay for much less money.