I have to say the check in process was confusing; on the Airbnb listing it says the host will meet you with keys and we did confirm my arrival time, but then I had to call the phone number to ask how to enter the apartment since no one was there. Had very spotty phone service inside, so it was a strange process, but Maria answered the phone and helped right away!
As far as the apartment, it was immaculate and clean and everything we needed. I loved having our own fridge and microwave and didn’t even use the kitchen much - too much good food to eat in Madrid. Excellent location, though it is in the middle of tourist center, you have very easy access to the rest of the city (I recommend walking, it’s nice!) and the metro stop is just a two minute walk. My room was next to the street, so the noise was pretty loud at night, just something to keep in mind if you are a light sleeper.
Would definitely stay here again!