This place is excellent - you just can't beat the location. Easy to get to from the airport, easy to walk everywhere in the city, great nearby Metro links. The apartment is just as lovely as it looks. Pepa is really quick at responding, gives very clear and helpful access instructions and info about the city, and is very welcoming. It's very homely and lovely! There is quite a lot of street noise outside, but I think that's just Madrid - it's so full of life and they stay out late! But earplugs worked fine for me, and my husband managed to sleep fine without, so it's not a big deal. Plenty of cafes, restaurants etc around and the food here is just spectacular.
Overall Madrid is just an amazing place to visit, and I this is a great apartment to stay while you do!