This is a great little flat in a very central location. It's walking distance from both Opera and Sol metro stations. You do have to walk up six flights of stairs, and the apartment is very small, but it is worth it. It's great to have air conditioning, but when we were there, the hot water wasn't working and the washing machine wasn't working either. Do cheek to ensure that these are working before you visit. Also, the bed is up a ladder on a mezzanine level, so consider this if you're claustrophobic. Estibaliz was very welcoming and easy-going and left us a bootle of Rose as a welcome gift.