The apartment is very cozy and feels spacious even though it is small. Located in a nice area of Madrid with lots of different cafés and restaurants within walking distance. Metro is located about 2 minutes from the apartment.
The apartment has everything you need for a short stay, and Ana is very helpful should you encounter any problems.
A minor drawback is that the apartment is a bit dark, but as you most likely will spend most of your time outside, this is not much of a problem.