This is, hands down, the nicest Airbnb I've ever stayed at.
The apartment itself is stunning--beautiful furniture and decor, two balconies with a killer view overlooking the Plaza de la Republica, nice white hotel-like linens. The building is also phenomenal: the roof deck pool and jacuzzi don't disappoint (we took advantage of them every evening), and there's just an overall feeling of elegance.
Location is good. It's in a more businessy area, so there's not a ton of food or nightlife *right* outside the door, but it's extremely central: it's within a short walk to virtually everywhere we wanted to go. And being on a big street was also nice for walking late at night--very safe neighborhood.
Highly recommend! It was a wonderful trip, and this is a wonderful apartment.