The flat is ideal if you're heading to events at La Caja Magica or the Matadero, otherwise it's pretty far from the metro/city center. It has some lovely views over south-east bit of the city.
Unfortunately the bed was not a double, it was two single beds that moved around every time I turned in my sleep, and the mattresses were rather hard and uncomfortable. Similarly, the towel situation could be improved, as we were provided only 2 towels for 2 people for five days. Check in was a bit odd, but detailed instructions were provided. I should also mentioned that there is a small shared lobby between two studios, and this was often noisy and bright in the middle of the night whenever someone arrived to access the other studio.