This apartment is beyond great. I was there with my family a couple of days in mid December and we loved. Hernan was super nice and waited for us for hours when we were running late.
The location is absolutely fantastic, it's really centric and everything is in walking distance.
The apartment is really comfortable, the terrace was a great asset and we enjoyed being in the living room when we came home. If you are planning a visit to Barcelona, I encourage you to stay here