We were a large group of 7 people, but the apatment size was big enough. Also, the location couldn't be better - right in the city, next to a metro and supermarket.
The communication and check-in was perfect and helpful with absolutely nothing to complain about.
The only thing is that we thought the rooftop terrace was directly belonging to and accessible from our apartment, which isn't the case. But this didn't actually matter, since we spend most of the time in this awesome city.
I can recommend this place wholeheartedly and send a big thank you to the EnjoyBCN Dali Team!