The location was great and can't be more central.
Joaquin and Natalia organised a parking for us, reserved it and everything, it was really great if us made things really easy on our side (being on a road trip around Spain parking was a headache sometimes). 15 Euros a night, super close from the apartment.
The place itself was big enough and we'll equipped. My only less great point was, as mentioned by others, the bathroom / shower situation. the door system is unfortunately very noisy and not very private.
The other things is that there is no view from the window, but that is being well compensated by the access to the wonderful rooftop few floors above with the elevator. What a beautiful view on the whole city !
We had a great stay and thank you again.