Very good and convenient location. The market area is within 10 minutes walk (the vegetable stalls outside and the organic produce shops nearby are excellent - try Sentido Común for exceptional service). The pinxos bars are also within 10 minutes.
The master bedroom is spacious with a decent en-suite shower room. The second (double) and third (twin) bedrooms are very small.
After a couple of days we felt a little caged in because all of the windows face onto the central courtyard-type area, with the only views of the other flats.
It was nice to have a separate, fairly well equipped kitchen. Other than salt and pepper, you'll need to provide everything else.
Quiet most of the time, with the occasional neighbourly noise although the double glazing does a good job of keeping it quiet inside.