This is an outstanding place to enjoy Barcelona. I can't say enough good things about it, but I will list them so that you rest assured you are making the right pick:
1. The apartment itself is renovated, very nicely done, all the rooms have A/C and heating, the kitchen space is wonderful, and the study...that was the place that I enjoyed the most. Great, spacious desk, with a great view of the area, and you can even catch a glimpse of the Sagrada Familia towers.
2. Location. You are 3-4 blocks away from the Paseo de Gracia, metro station, Casa Batlló, La Nacional which is a great place for food or just go have a drink, shops, etc. Even right next to the apartment there is a small convenience store and a couple of doors down a bar with billiards and great drinks. Walking to the Sagrada Familia is even manageable if you are not with small children.
3. The little things. The TV service has Netflix, Amazon prime so one night we got back somehow earlier than usual, we were able to catch a movie and a few good laughs as a family. All the kitchen equipment is very well-thought out for a families and for those that want to do a bit of cooking and not just depend on eating out. The communication from Weflating was outstanding, always courteous and flexible as we changed our arrival time significantly, they even provided us with a covid-19 testing site recommendation that was way more affordable than what I had found doing some internet searches and listing the "expert travelers' recommendations". Yes the door knob is a bit "modern", so try it out before leaving the apartment for the first time, but once you know which way to turn is is super simple, so no issue there.
Obviously, it is a bit on the pricier end, but remember the location and the quality of the apartment you are enjoying. For us, getting 2 hotel rooms to fit a family of 5 for a few nights made this decision a no-brainer.
Overall, a 6 out of 5!