Barbara was a perfect host for us (me and my girlfriend). She is a very kind person and always ready to help. She is also very generous of her appartment common space even if we had rented only a private room. The room was simple with everything needed, and the appartment was clean and really functional. You might find that it is hot during the summer, but you will probably find Barcelona hot no matter where you stay in the city :D, so it is not the room's fault!
Thanks for everything :)