The flat was well located right next to Sagrada Familia and the metro stop. Check-in was easy with a member of staff coming by when you arrive. The kitchen was well equipped
And the beds were comfortable. The size of the flat was big enough to accommodate three of us comfortably.
There were a few issues that might be an inconvenience. As it is an old building, the walls are not soundproof, so you could hear people walking in and out of the building. You may also be affected by bass sounds from a nearby source of music but it stops at around 10pm, so you might not be bothered by it unless you sleep early. The flat might also need some sprucing up with the sofa being worn out and spotting some stains.