Only stayed two days but totally loved the place, the room was really comfortable, cosy & tidy, the bathroom (although shared) was super clean - didn't used to kitchen because there are too many amazing restaurants just footsteps away from the flat we needed to discover (and we weren't disappointed).
Constance was very nice & welcoming, we didn't see her much (nor any of the other guests), but it felt like she loved her guests and her house, so that's always a good thing.
Clearly a place I would stay at again, if I ever had to come to Barcelona again...