The apartment was perfect for our stay, we being a group of 6.

The location is great, easy access to different metro or bus stations.
Walking distance to some of the landmarks like La Pedrera and yet in the cosy area farther away from the tourist crowds.
The staff was very friendly and helpful. We got everything we needed from the stay. The gave us laundry detergent and iron when we asked for them.
They were quick on answering the phone and solving things for us.
The checkin was easy, contactless, we even got an early check in. The office is in the same building and you can store there the luggages during the working hours.
Good AC all around the apartment. The majority of the beds were comfortable.
Nice outdoor space, the balcony on the apartment and the rooftop terrace.