Ana's space is fun and nicely decorated when otherwise some Airbnb's can be quite bland. It's a funky layout with nice exposed wood beams and the big wooden bathroom door is a nice touch.
The apartment is in a great location! The neighborhood is within walking distance to Sol, Opera, Plaza Mayor and many other Madrid attractions.
I'd say this space is probably better for an individual traveler as my boyfriend and I like a little more privacy. The bathroom is on the other side of the space from the bedroom but since it's more like a studio apartment than a full one-bedroom there's not a lot to absorb sound throughout the apartment.
It was also a bit cold; the space heater helped in the bedroom at night but we were chilly in the morning (we were in Madrid in November).
Ana was a great host, was quick to communicate whenever we needed anything and gave us some great restaurant and neighborhood recommendations which we really appreciated.