The apartment is nice, the same in the pictures. We stayed there for two months working from home, and we never had any particular problem, if we had any questions Anna would be quick to answer and she was always helpful and polite. We also asked her to checkout at 4am and she had no problems with it.
The location is great, you can find anything you need within a 5/10 minutes walk, metro, buses, grocery stores, gyms, also the Glories Mall and the Sagrada Familia at 15 minutes more or less.
Lastly the internet connection is fast and stable (300mb/s), and an ethernet port is available in all rooms, never had an issue working with it.